diff --git a/config.h b/config.h
index 3300a84..ec6d68a 100644
--- a/config.h
+++ b/config.h
@@ -123,7 +123,7 @@ public:
     cSDPluginManager *plgManager = NULL;
     cFontManager *fontManager = NULL;
     cImageCache *imgCache = NULL;
-    cRecordingsFolderInfo recFolderInfo(Recordings);
+    cRecordingsFolderInfo recFolderInfo;
 #else
     extern cDesignerConfig config;
     extern cSDPluginManager *plgManager;
diff --git a/coreengine/area.c b/coreengine/area.c
index ca5ae25..2340c39 100644
--- a/coreengine/area.c
+++ b/coreengine/area.c
@@ -51,36 +51,36 @@ cArea::cArea(const cArea &other) {
     blinking = false;
     scrollFunc = NULL;
 
-    for (cFunction *func = other.functions.First(); func; func = other.functions.Next(func)) {
-        if (cFuncFill *f = dynamic_cast<cFuncFill*>(func)) {
+    for (const cFunction *func = other.functions.First(); func; func = other.functions.Next(func)) {
+        if (cFuncFill *f = dynamic_cast<cFuncFill*>((cFunction*)func)) {
             cFuncFill *fFill = new cFuncFill(*f);
             fFill->SetOwner(this);
             functions.Add(fFill);
-        } else if (cFuncDrawRectangle *f = dynamic_cast<cFuncDrawRectangle*>(func)) {
+        } else if (cFuncDrawRectangle *f = dynamic_cast<cFuncDrawRectangle*>((cFunction*)func)) {
             cFuncDrawRectangle *fDrawRect = new cFuncDrawRectangle(*f);
             fDrawRect->SetOwner(this);
             functions.Add(fDrawRect);
-        } else if (cFuncDrawEllipse *f = dynamic_cast<cFuncDrawEllipse*>(func)) {
+        } else if (cFuncDrawEllipse *f = dynamic_cast<cFuncDrawEllipse*>((cFunction*)func)) {
             cFuncDrawEllipse *fDrawEllipse = new cFuncDrawEllipse(*f);
             fDrawEllipse->SetOwner(this);
             functions.Add(fDrawEllipse);
-        } else if (cFuncDrawSlope *f = dynamic_cast<cFuncDrawSlope*>(func)) {
+        } else if (cFuncDrawSlope *f = dynamic_cast<cFuncDrawSlope*>((cFunction*)func)) {
             cFuncDrawSlope *fDrawSlope = new cFuncDrawSlope(*f);
             fDrawSlope->SetOwner(this);
             functions.Add(fDrawSlope);
-        } else if (cFuncDrawText *f = dynamic_cast<cFuncDrawText*>(func)) {
+        } else if (cFuncDrawText *f = dynamic_cast<cFuncDrawText*>((cFunction*)func)) {
             cFuncDrawText *fDrawText = new cFuncDrawText(*f);
             fDrawText->SetOwner(this);
             functions.Add(fDrawText);
-        } else if (cFuncDrawTextVertical *f = dynamic_cast<cFuncDrawTextVertical*>(func)) {
+        } else if (cFuncDrawTextVertical *f = dynamic_cast<cFuncDrawTextVertical*>((cFunction*)func)) {
             cFuncDrawTextVertical *fDrawTextVertical = new cFuncDrawTextVertical(*f);
             fDrawTextVertical->SetOwner(this);
             functions.Add(fDrawTextVertical);
-        } else if (cFuncDrawTextBox *f = dynamic_cast<cFuncDrawTextBox*>(func)) {
+        } else if (cFuncDrawTextBox *f = dynamic_cast<cFuncDrawTextBox*>((cFunction*)func)) {
             cFuncDrawTextBox *fDrawTextBox = new cFuncDrawTextBox(*f);
             fDrawTextBox->SetOwner(this);
             functions.Add(fDrawTextBox);
-        } else if (cFuncDrawImage *f = dynamic_cast<cFuncDrawImage*>(func)) {
+        } else if (cFuncDrawImage *f = dynamic_cast<cFuncDrawImage*>((cFunction*)func)) {
             cFuncDrawImage *fDrawImage = new cFuncDrawImage(*f);
             fDrawImage->SetOwner(this);
             functions.Add(fDrawImage);
@@ -580,7 +580,7 @@ cAreaContainer::cAreaContainer(void) {
 cAreaContainer::cAreaContainer(const cAreaContainer &other) {
     globals = other.globals;
     attribs = new cAreaContainerAttribs(*other.attribs);
-    for (cArea *area = other.areas.First(); area; area = other.areas.Next(area)) {
+    for (const cArea *area = other.areas.First(); area; area = other.areas.Next(area)) {
         cArea *a = new cArea(*area);
         a->SetAreaContainer(this);
         areas.Add(a);
diff --git a/coreengine/complextypes.c b/coreengine/complextypes.c
index 67772f0..a660dca 100644
--- a/coreengine/complextypes.c
+++ b/coreengine/complextypes.c
@@ -99,7 +99,7 @@ void cCond::Debug(void) {
     if (compareValue >= 0)
         esyslog("skindesigner:              compare value: %d", compareValue);
     if (compareStrValue)
-        esyslog("skindesigner:              compare string value: %d", compareStrValue);
+        esyslog("skindesigner:              compare string value: %s", compareStrValue);
 }
 
 /******************************************************************
@@ -117,7 +117,7 @@ cCondition::cCondition(const cCondition &other) {
     globals = NULL;
     tokenContainer = NULL;
     loopInfo = NULL;
-    for (cCond *cond = other.conds.First(); cond; cond = other.conds.Next(cond))
+    for (const cCond *cond = other.conds.First(); cond; cond = other.conds.Next(cond))
         conds.Add(new cCond(*cond));
 }
 
@@ -468,7 +468,7 @@ cSummand::cSummand(const cSummand &other) {
     if (other.summand)
         summand = strdup(other.summand);
     positive = other.positive;
-    for (cFactor *fac = other.factors.First(); fac; fac = other.factors.Next(fac)) {
+    for (const cFactor *fac = other.factors.First(); fac; fac = other.factors.Next(fac)) {
         factors.Add(new cFactor(*fac));
     }
 }
@@ -490,13 +490,13 @@ void cSummand::Debug(void) {
         else if (f->type == eFactorType::looptoken)
             esyslog("skindesigner:              LoopToken factor, index %d, %s", f->tokenIndex, link);
         else if (f->type == eFactorType::xref)
-            esyslog("skindesigner:              posx reference factor, %s, %p, %s, result: %f", f->funcRefName, f->funcRef, link, f->funcRef->FuncX());
+            esyslog("skindesigner:              posx reference factor, %s, %p, %s, result: %d", f->funcRefName, f->funcRef, link, f->funcRef->FuncX());
         else if (f->type == eFactorType::yref)
-            esyslog("skindesigner:              posy reference factor, %s, %p, %s, result: %f", f->funcRefName, f->funcRef, link, f->funcRef->FuncY());
+            esyslog("skindesigner:              posy reference factor, %s, %p, %s, result: %d", f->funcRefName, f->funcRef, link, f->funcRef->FuncY());
         else if (f->type == eFactorType::widthref)
-            esyslog("skindesigner:              width reference factor, %s, %p, %s, result: %f", f->funcRefName, f->funcRef, link, f->funcRef->FuncWidth());
+            esyslog("skindesigner:              width reference factor, %s, %p, %s, result: %d", f->funcRefName, f->funcRef, link, f->funcRef->FuncWidth());
         else if (f->type == eFactorType::heightref)
-            esyslog("skindesigner:              height reference factor, %s, %p %s, result: %f", f->funcRefName, f->funcRef, link, f->funcRef->FuncHeight());
+            esyslog("skindesigner:              height reference factor, %s, %p %s, result: %d", f->funcRefName, f->funcRef, link, f->funcRef->FuncHeight());
         else if (f->type == eFactorType::areawidth)
             esyslog("skindesigner:              {areawidth} factor, %s", link);
         else if (f->type == eFactorType::areaheight)
@@ -531,7 +531,7 @@ cNumericExpr::cNumericExpr(const cNumericExpr &other) {
     horizontal = other.horizontal;
     value = other.value;
     dynamic = other.dynamic;
-    for (cSummand *s = other.summands.First(); s; s = other.summands.Next(s)) {
+    for (const cSummand *s = other.summands.First(); s; s = other.summands.Next(s)) {
         summands.Add(new cSummand(*s));
     }
 }
@@ -1079,7 +1079,7 @@ cTextExpr::cTextExpr(const cTextExpr &other) {
     expr = strdup(other.expr);
     tokenContainer = NULL;
     loopInfo = NULL;
-    for (cTextToken* t = other.textTokens.First(); t; t = other.textTokens.Next(t)) {
+    for (const cTextToken* t = other.textTokens.First(); t; t = other.textTokens.Next(t)) {
         textTokens.Add(new cTextToken(*t));
     }
 }
diff --git a/coreengine/listelements.c b/coreengine/listelements.c
index 6a3b525..74bd1bb 100644
--- a/coreengine/listelements.c
+++ b/coreengine/listelements.c
@@ -797,10 +797,14 @@ bool cCeMenuSchedules::Parse(bool forced) {
 
     if (menuCat == mcScheduleNow || menuCat == mcScheduleNext) {
         int eventsAvailable = 0;
+#if defined (APIVERSNUM) && (APIVERSNUM >= 20301)
+        LOCK_SCHEDULES_READ;
+        const cSchedules* schedules = Schedules;
+#else
         cSchedulesLock schedulesLock;
-        const cSchedules *schedules = cSchedules::Schedules(schedulesLock);
-        const cSchedule *schedule = NULL;
-        schedule = schedules->GetSchedule(channel);
+        const cSchedules* schedules = (cSchedules*)cSchedules::Schedules(schedulesLock);
+#endif
+        const cSchedule *schedule = schedules->GetSchedule(channel);
         if (schedule) {
             for (const cEvent *e = schedule->GetPresentEvent(); e; e = schedule->Events()->Next(e)) {
                 eventsAvailable++;
@@ -917,10 +921,14 @@ bool cLeMenuChannels::Parse(bool forced) {
     }
 
     //current schedule
+#if defined (APIVERSNUM) && (APIVERSNUM >= 20301)
+    LOCK_SCHEDULES_READ;
+    const cSchedules* schedules = Schedules;
+#else
     cSchedulesLock schedulesLock;
-    const cSchedules *schedules = cSchedules::Schedules(schedulesLock);
-    const cSchedule *schedule = NULL;
-    schedule = schedules->GetSchedule(channel);
+    const cSchedules* schedules = (cSchedules*)cSchedules::Schedules(schedulesLock);
+#endif
+    const cSchedule *schedule = schedules->GetSchedule(channel);
     if (schedule) {
         const cEvent *presentEvent = schedule->GetPresentEvent();
         if (presentEvent) {
@@ -1046,10 +1054,14 @@ bool cCeMenuChannels::Parse(bool forced) {
         tokenContainer->AddIntToken((int)eCeMenuChannelsIT::isTerr, source->IsTerr(source->Code()));
     }
 
+#if defined (APIVERSNUM) && (APIVERSNUM >= 20301)
+    LOCK_SCHEDULES_READ;
+    const cSchedules* schedules = Schedules;
+#else
     cSchedulesLock schedulesLock;
-    const cSchedules *schedules = cSchedules::Schedules(schedulesLock);
-    const cSchedule *schedule = NULL;
-    schedule = schedules->GetSchedule(channel);
+    const cSchedules* schedules = (cSchedules*)cSchedules::Schedules(schedulesLock);
+#endif
+    const cSchedule *schedule = schedules->GetSchedule(channel);
     if (schedule) {
         const cEvent *presentEvent = schedule->GetPresentEvent();
         if (presentEvent) {
@@ -1484,7 +1496,13 @@ bool cLeMenuRecordings::Parse(bool forced) {
         cRecordingsFolderInfo::cFolderInfo *folderInfo = recFolderInfo.Get(folderName);
         delete[] folderName;
         if (folderInfo) {
-            cRecording *newestRec = Recordings.GetByName(*folderInfo->LatestFileName);
+#if defined (APIVERSNUM) && (APIVERSNUM >= 20301)
+            LOCK_RECORDINGS_READ;
+            const cRecordings* recordings = Recordings;
+#else
+            cRecordings* recordings = &Recordings;
+#endif
+            const cRecording *newestRec = recordings->GetByName(*folderInfo->LatestFileName);
             if (newestRec) {
                 usedRecording = newestRec;
             }
@@ -1724,7 +1742,13 @@ bool cCeMenuRecordings::Parse(bool forced) {
     if (isFolder) {
         cRecordingsFolderInfo::cFolderInfo *folderInfo = recFolderInfo.Get(folderName.str().c_str());
         if (folderInfo) {
-            cRecording *newestRec = Recordings.GetByName(*folderInfo->LatestFileName);
+#if defined (APIVERSNUM) && (APIVERSNUM >= 20301)
+            LOCK_RECORDINGS_READ;
+            const cRecordings* recordings = Recordings;
+#else
+            cRecordings* recordings = &Recordings;
+#endif
+            const cRecording *newestRec = recordings->GetByName(*folderInfo->LatestFileName);
             if (newestRec) {
                 usedRecording = newestRec;
             }
diff --git a/coreengine/viewdetail.c b/coreengine/viewdetail.c
index 2999b00..0bb8555 100644
--- a/coreengine/viewdetail.c
+++ b/coreengine/viewdetail.c
@@ -353,7 +353,13 @@ bool cViewDetailEpg::Parse(bool forced) {
     tokenContainer->AddIntToken((int)eDmDetailedEpgIT::year, sStartTime->tm_year + 1900);
     tokenContainer->AddIntToken((int)eDmDetailedEpgIT::daynumeric, sStartTime->tm_mday);
     tokenContainer->AddIntToken((int)eDmDetailedEpgIT::month, sStartTime->tm_mon+1);
-    const cChannel *channel = Channels.GetByChannelID(event->ChannelID());
+#if defined (APIVERSNUM) && (APIVERSNUM >= 20301)
+    LOCK_CHANNELS_READ;
+    const cChannels* channels = Channels;
+#else
+    cChannels* channels = &Channels;
+#endif
+    const cChannel *channel = channels->GetByChannelID(event->ChannelID());
     if (channel) {
         tokenContainer->AddStringToken((int)eDmDetailedEpgST::channelname, channel->Name());
         tokenContainer->AddIntToken((int)eDmDetailedEpgIT::channelnumber, channel->Number());
@@ -434,7 +440,13 @@ int cViewDetailEpg::NumReruns(cList<Epgsearch_searchresults_v1_0::cServiceSearch
     for (Epgsearch_searchresults_v1_0::cServiceSearchResult *r = reruns->First(); r && i < maxNumReruns; r = reruns->Next(r)) {
         time_t eventStart = event->StartTime();
         time_t rerunStart = r->event->StartTime();
-        cChannel *channel = Channels.GetByChannelID(r->event->ChannelID(), true, true);
+#if defined (APIVERSNUM) && (APIVERSNUM >= 20301)
+        LOCK_CHANNELS_READ;
+        const cChannels* channels = Channels;
+#else
+        cChannels* channels = &Channels;
+#endif
+        const cChannel *channel = channels->GetByChannelID(r->event->ChannelID(), true, true);
         //check for identical event
         if ((event->ChannelID() == r->event->ChannelID()) && (eventStart == rerunStart))
             continue;
@@ -463,7 +475,13 @@ void cViewDetailEpg::SetReruns(cList<Epgsearch_searchresults_v1_0::cServiceSearc
     for (Epgsearch_searchresults_v1_0::cServiceSearchResult *r = reruns->First(); r && i < maxNumReruns; r = reruns->Next(r)) {
         time_t eventStart = event->StartTime();
         time_t rerunStart = r->event->StartTime();
-        cChannel *channel = Channels.GetByChannelID(r->event->ChannelID(), true, true);
+#if defined (APIVERSNUM) && (APIVERSNUM >= 20301)
+        LOCK_CHANNELS_READ;
+        const cChannels* channels = Channels;
+#else
+        cChannels* channels = &Channels;
+#endif
+        const cChannel *channel = channels->GetByChannelID(r->event->ChannelID(), true, true);
         //check for identical event
         if ((event->ChannelID() == r->event->ChannelID()) && (eventStart == rerunStart))
             continue;
@@ -792,7 +810,13 @@ void cViewDetailRec::SetRecInfos(void) {
 
     const cRecordingInfo *info = recording->Info();
     if (info) {
-        cChannel *channel = Channels.GetByChannelID(info->ChannelID());
+#if defined (APIVERSNUM) && (APIVERSNUM >= 20301)
+        LOCK_CHANNELS_READ;
+        const cChannels* channels = Channels;
+#else
+        cChannels* channels = &Channels;
+#endif
+        const cChannel *channel = channels->GetByChannelID(info->ChannelID());
         if (channel) {
             tokenContainer->AddStringToken((int)eDmDetailedRecST::recchannelname, channel->Name());
             tokenContainer->AddStringToken((int)eDmDetailedRecST::recchannelid, *channel->GetChannelID().ToString());
diff --git a/coreengine/viewdisplaymenu.c b/coreengine/viewdisplaymenu.c
index 467511e..5cd0298 100644
--- a/coreengine/viewdisplaymenu.c
+++ b/coreengine/viewdisplaymenu.c
@@ -406,7 +406,12 @@ void cViewMenu::SetChannelHeader(const cEvent *event) {
     if (!event)
         return;
     if (menuChange && menuCat == mcSchedule) {
+#if defined (APIVERSNUM) && (APIVERSNUM >= 20301)
+        LOCK_CHANNELS_READ;
+        const cChannel *channel = Channels->GetByChannelID(event->ChannelID());
+#else
         const cChannel *channel = Channels.GetByChannelID(event->ChannelID());
+#endif
         if (channel)
             activeSubview->SetChannel(channel);
     }
diff --git a/coreengine/viewelement.c b/coreengine/viewelement.c
index 466f8cb..b6ae4bc 100644
--- a/coreengine/viewelement.c
+++ b/coreengine/viewelement.c
@@ -39,10 +39,10 @@ cViewElement::cViewElement(const cViewElement &other) {
     tokenContainer = NULL;
     attribs = new cViewElementAttribs(*other.attribs);
 
-    for (cAreaNode *node = other.areaNodes.First(); node; node = other.areaNodes.Next(node)) {
-        if (cArea *a = dynamic_cast<cArea*>(node)) {
+    for (const cAreaNode *node = other.areaNodes.First(); node; node = other.areaNodes.Next(node)) {
+        if (cArea *a = dynamic_cast<cArea*>((cAreaNode*)node)) {
             areaNodes.Add(new cArea(*a));
-        } else if (cAreaContainer *ac = dynamic_cast<cAreaContainer*>(node)) {
+        } else if (cAreaContainer *ac = dynamic_cast<cAreaContainer*>((cAreaNode*)node)) {
             areaNodes.Add(new cAreaContainer(*ac));
         } 
     }
diff --git a/coreengine/viewelementscommon.c b/coreengine/viewelementscommon.c
index 0f9c85c..2226b77 100644
--- a/coreengine/viewelementscommon.c
+++ b/coreengine/viewelementscommon.c
@@ -287,18 +287,27 @@ bool cVeDevices::Parse(bool forced) {
         else
             deviceLiveTV = primaryDevice->DeviceNumber();
     }
-    //check currently recording devices
-    for (cTimer *timer = Timers.First(); timer; timer = Timers.Next(timer)) {
-        if (!timer->Recording()) {
-            continue;
-        }
-        if (cRecordControl *RecordControl = cRecordControls::GetRecordControl(timer)) {
-            const cDevice *recDevice = RecordControl->Device();
-            if (recDevice) {
-                mutexDevices.Lock();
-                if (recDevices)
-                    recDevices[recDevice->DeviceNumber()] = true;
-                mutexDevices.Unlock();
+    // check currently recording devices
+    // BLOCK for LOCK_TIMERS_READ scope !!
+    {
+#if defined (APIVERSNUM) && (APIVERSNUM >= 20301)
+        LOCK_TIMERS_READ;
+        const cTimers* timers = Timers;
+#else
+        const cTimers* timers = &Timers;
+#endif
+        for (const cTimer *timer = timers->First(); timer; timer = timers->Next(timer)) {
+            if (!timer->Recording()) {
+                continue;
+            }
+            if (cRecordControl *RecordControl = cRecordControls::GetRecordControl(timer)) {
+                const cDevice *recDevice = RecordControl->Device();
+                if (recDevice) {
+                    mutexDevices.Lock();
+                    if (recDevices)
+                        recDevices[recDevice->DeviceNumber()] = true;
+                    mutexDevices.Unlock();
+                }
             }
         }
     }
diff --git a/coreengine/viewelementsdisplaychannel.c b/coreengine/viewelementsdisplaychannel.c
index 1ade883..d104ef8 100644
--- a/coreengine/viewelementsdisplaychannel.c
+++ b/coreengine/viewelementsdisplaychannel.c
@@ -91,9 +91,16 @@ void cVeDcChannelGroup::Set(const cChannel *c) {
 }
 
 const char *cVeDcChannelGroup::GetChannelSep(const cChannel *c, bool prev) {
-    const cChannel *sep = prev ? Channels.Prev(c) :
-                                 Channels.Next(c);
-    for (; sep; (prev)?(sep = Channels.Prev(sep)):(sep = Channels.Next(sep))) {
+#if defined (APIVERSNUM) && (APIVERSNUM >= 20301)
+    LOCK_CHANNELS_READ;
+    const cChannels* channels = Channels;
+#else
+    const cChannels* channels = &Channels;
+#endif
+    const cChannel *sep = prev ? channels->Prev(c) :
+                                 channels->Next(c);
+
+    for (; sep; (prev)?(sep = channels->Prev(sep)):(sep = channels->Next(sep))) {
         if (sep->GroupSep()) {
             return sep->Name();
         }
@@ -169,7 +176,17 @@ void cVeDcEpgInfo::Close(void) {
 
 bool cVeDcEpgInfo::EventHasTimer(const cEvent *e) {
     if (!e) return false;
-    cGlobalSortedTimers SortedTimers;// local and remote timers
+    int timerCount = 0;
+    // BLOCK for LOCK_TIMERS_READ scope !!
+    {
+#if defined (APIVERSNUM) && (APIVERSNUM >= 20301)
+       LOCK_TIMERS_READ;
+       timerCount = Timers->Count();
+#else
+       timerCount = Timers.Count();
+#endif
+    }
+    cGlobalSortedTimers SortedTimers(timerCount); // local and remote timers
     bool hasTimer = e->HasTimer();
     for (int i = 0; i < SortedTimers.Size() && !hasTimer; i++) 
         if (const cTimer *Timer = SortedTimers[i]) 
@@ -311,7 +328,17 @@ void cVeDcStatusInfo::Set(const cChannel *c) {
     bool isDolby = c->Dpid(0);
     bool isEncrypted = c->Ca();
     bool isRecording = cRecordControls::Active();
-    cGlobalSortedTimers SortedTimers;// local and remote timers
+    int timerCount = 0;
+    // BLOCK for LOCK_TIMERS_READ scope !!
+    {
+#if defined (APIVERSNUM) && (APIVERSNUM >= 20301)
+       LOCK_TIMERS_READ;
+       timerCount = Timers->Count();
+#else
+       timerCount = Timers.Count();
+#endif
+    }
+    cGlobalSortedTimers SortedTimers(timerCount); // local and remote timers
     for (int i = 0; i < SortedTimers.Size() && !isRecording; i++)
         if (const cTimer *Timer = SortedTimers[i])
             if (Timer->Recording()) 
diff --git a/coreengine/viewelementsdisplaymenu.c b/coreengine/viewelementsdisplaymenu.c
index f357b22..b08d7a7 100644
--- a/coreengine/viewelementsdisplaymenu.c
+++ b/coreengine/viewelementsdisplaymenu.c
@@ -351,9 +351,19 @@ void cVeDmTimers::SetTokenContainer(void) {
 bool cVeDmTimers::Parse(bool forced) {
     if (!cViewElement::Parse(forced))
         return false;
-
     tokenContainer->Clear();
-    cGlobalSortedTimers SortedTimers;// local and remote timers
+
+    int timerCount = 0;
+    // BLOCK for LOCK_TIMERS_READ scope !!
+    {
+#if defined (APIVERSNUM) && (APIVERSNUM >= 20301)
+       LOCK_TIMERS_READ;
+       timerCount = Timers->Count();
+#else
+       timerCount = Timers.Count();
+#endif
+    }
+    cGlobalSortedTimers SortedTimers(timerCount); // local and remote timers
     int numTimers = SortedTimers.Size();
     tokenContainer->AddIntToken((int)eDMTimersIT::numtimers, numTimers);
     tokenContainer->AddIntToken((int)eDMTimersIT::numtimerconflicts, SortedTimers.NumTimerConfilicts());
@@ -469,8 +479,15 @@ bool cVeDmCurrentschedule::Parse(bool forced) {
 
     cDevice *device = cDevice::PrimaryDevice();
     const cChannel *channel = NULL;
+#if defined (APIVERSNUM) && (APIVERSNUM >= 20301)
+    LOCK_CHANNELS_READ;
+    const cChannels* channels = Channels;
+#else
+    cChannels* channels = &Channels;
+#endif
+
     if (!device->Replaying() || device->Transferring()) {
-        channel = Channels.GetByNumber(device->CurrentChannel());
+        channel = channels->GetByNumber(device->CurrentChannel());
     }
     if (channel) {
         ParseFromChannel(channel);
@@ -489,9 +506,17 @@ bool cVeDmCurrentschedule::Parse(bool forced) {
 
 void cVeDmCurrentschedule::ParseFromChannel(const cChannel *channel) {
     const cEvent *event = NULL;
-    cSchedulesLock SchedulesLock;
-    if (const cSchedules *Schedules = cSchedules::Schedules(SchedulesLock))
-        if (const cSchedule *Schedule = Schedules->GetSchedule(channel))
+
+#if defined (APIVERSNUM) && (APIVERSNUM >= 20301)
+    LOCK_SCHEDULES_READ;
+    const cSchedules* schedules = Schedules;
+#else
+    cSchedulesLock schedulesLock;
+    const cSchedules* schedules = (cSchedules*)cSchedules::Schedules(schedulesLock);
+#endif
+
+    if (schedules)
+        if (const cSchedule *Schedule = schedules->GetSchedule(channel))
             event = Schedule->GetPresentEvent();
     if (!event)
         return;
@@ -839,20 +864,37 @@ bool cVeDmLastrecordings::Parse(bool forced) {
         return false;
 
     tokenContainer->Clear();
-    cGlobalSortedTimers SortedTimers;// local and remote timers
-    int numTimers = SortedTimers.Size();
+    int numTimers = 0;
+    // BLOCK for LOCK_TIMERS_READ scope !!
+    {
+#if defined (APIVERSNUM) && (APIVERSNUM >= 20301)
+        LOCK_TIMERS_READ;
+        numTimers = Timers->Count();
+#else
+        numTimers = Timers.Count();
+#endif
+    }
+   
+    cGlobalSortedTimers SortedTimers(numTimers);  // local and remote timers
     //set number of timers so that it is possible to adapt this viewelement accordingly
-    tokenContainer->AddIntToken((int)eDMLastrecordingsIT::numtimers, numTimers);
+    tokenContainer->AddIntToken((int)eDMLastrecordingsIT::numtimers, SortedTimers.Size());
 
-    list<cRecording*> orderedRecs;
+    list<const cRecording*> orderedRecs;
 
-    for (cRecording *recording = Recordings.First(); recording; recording = Recordings.Next(recording)) {
+#if defined (APIVERSNUM) && (APIVERSNUM >= 20301)
+    LOCK_RECORDINGS_READ;
+    const cRecordings* recordings = Recordings;
+#else
+    const cRecordings* recordings = &Recordings;
+#endif
+
+    for (const cRecording *recording = recordings->First(); recording; recording = recordings->Next(recording)) {
         if (orderedRecs.size() == 0) {
             orderedRecs.push_back(recording);
             continue;
         }
         bool inserted = false;
-        for (list<cRecording*>::iterator it = orderedRecs.begin(); it != orderedRecs.end(); it++) {
+        for (list<const cRecording*>::iterator it = orderedRecs.begin(); it != orderedRecs.end(); it++) {
             const cRecording *orderedRec = *it;
             if (recording->Start() >= orderedRec->Start()) {
                 orderedRecs.insert(it, recording);
@@ -876,7 +918,7 @@ bool cVeDmLastrecordings::Parse(bool forced) {
     tokenContainer->CreateLoopTokenContainer(&loopInfo);
 
     int i = 0;
-    for (list<cRecording*>::iterator it = orderedRecs.begin(); it != orderedRecs.end(); it++) {
+    for (list<const cRecording*>::iterator it = orderedRecs.begin(); it != orderedRecs.end(); it++) {
         const cRecording *recording = *it;
 #if APIVERSNUM >= 20101
         if (recording->IsInUse()) {
@@ -1000,7 +1042,13 @@ bool cVeDmDetailheaderEpg::Parse(bool forced) {
     tokenContainer->AddIntToken((int)eDmDetailedHeaderEpgIT::year, sStartTime->tm_year + 1900);
     tokenContainer->AddIntToken((int)eDmDetailedHeaderEpgIT::daynumeric, sStartTime->tm_mday);
     tokenContainer->AddIntToken((int)eDmDetailedHeaderEpgIT::month, sStartTime->tm_mon+1);
-    const cChannel *channel = Channels.GetByChannelID(event->ChannelID());
+#if defined (APIVERSNUM) && (APIVERSNUM >= 20301)
+    LOCK_CHANNELS_READ;
+    const cChannels* channels = Channels;
+#else
+    cChannels* channels = &Channels;
+#endif
+    const cChannel *channel = channels->GetByChannelID(event->ChannelID());
     if (channel) {
         tokenContainer->AddStringToken((int)eDmDetailedHeaderEpgST::channelname, channel->Name());
         tokenContainer->AddIntToken((int)eDmDetailedHeaderEpgIT::channelnumber, channel->Number());
@@ -1132,7 +1180,13 @@ bool cVeDmDetailheaderRec::Parse(bool forced) {
             tokenContainer->AddIntToken((int)eDmDetailedHeaderRecIT::durationeventhours, duration / 60);
             tokenContainer->AddStringToken((int)eDmDetailedHeaderRecST::durationeventminutes, *cString::sprintf("%.2d", duration%60));
         }
-        cChannel *channel = Channels.GetByChannelID(info->ChannelID());
+#if defined (APIVERSNUM) && (APIVERSNUM >= 20301)
+        LOCK_CHANNELS_READ;
+        const cChannels* channels = Channels;
+#else
+        cChannels* channels = &Channels;
+#endif
+        const cChannel *channel = channels->GetByChannelID(info->ChannelID());
         if (channel) {
             tokenContainer->AddStringToken((int)eDmDetailedHeaderRecST::recchannelname, channel->Name());
             tokenContainer->AddStringToken((int)eDmDetailedHeaderRecST::recchannelid, *channel->GetChannelID().ToString());
diff --git a/extensions/imagecache.c b/extensions/imagecache.c
index d8c89c8..fc05f5f 100644
--- a/extensions/imagecache.c
+++ b/extensions/imagecache.c
@@ -56,13 +56,20 @@ void cImageCache::CacheLogo(int width, int height) {
         return;
     if (width == 0 || height == 0)
         return;
-    
+
+#if defined (APIVERSNUM) && (APIVERSNUM >= 20301)
+    LOCK_CHANNELS_READ;
+    const cChannels* channels = Channels;
+#else
+    const cChannels* channels = &Channels;
+#endif
+
     int logosCached = 0;     
 
     if (config.numLogosMax && config.numLogosMax < (int)channelLogoCache.size())
         return;
 
-    for (const cChannel *channel = Channels.First(); channel; channel = Channels.Next(channel)) {
+    for (const cChannel *channel = channels->First(); channel; channel = channels->Next(channel)) {
         if (logosCached >= config.numLogosPerSizeInitial)
             break;
         if (channel->GroupSep()) {
@@ -97,7 +104,13 @@ cImage *cImageCache::GetLogo(string channelID, int width, int height) {
         return (cImage*)hit->second;
     } else {
         tChannelID chanID = tChannelID::FromString(channelID.c_str());
-        const cChannel *channel = Channels.GetByChannelID(chanID);
+#if defined (APIVERSNUM) && (APIVERSNUM >= 20301)
+        LOCK_CHANNELS_READ;
+        const cChannels* channels = Channels;
+#else
+        cChannels* channels = &Channels;
+#endif
+        const cChannel *channel = channels->GetByChannelID(chanID);
         if (!channel)
             return NULL;
         bool success = LoadLogo(channel);
@@ -151,7 +164,13 @@ cImage *cImageCache::GetSeparatorLogo(string name, int width, int height) {
 
 bool cImageCache::LogoExists(string channelID) {
     tChannelID chanID = tChannelID::FromString(channelID.c_str());
-    const cChannel *channel = Channels.GetByChannelID(chanID);
+#if defined (APIVERSNUM) && (APIVERSNUM >= 20301)
+    LOCK_CHANNELS_READ;
+    const cChannels* channels = Channels;
+#else
+    cChannels* channels = &Channels;
+#endif
+    const cChannel *channel = channels->GetByChannelID(chanID);
     if (!channel)
         return false;
     string logoLower = StrToLowerCase(channel->Name());
diff --git a/extensions/recfolderinfo.c b/extensions/recfolderinfo.c
index d03ed6c..5f71354 100644
--- a/extensions/recfolderinfo.c
+++ b/extensions/recfolderinfo.c
@@ -13,7 +13,7 @@ private:
   int       _count;
   cString   _latestFileName;
 
-  void UpdateData(cRecording *Recording);
+  void UpdateData(const cRecording *Recording);
   cFolderInfoIntern *FindSubFolder(const char *Name) const;
 
 public:
@@ -24,7 +24,7 @@ public:
   // if "Add", missing folders are created
   cFolderInfoIntern *Find(const char *Name, bool Add);
 
-  void Add(cRecording *Recording);
+  void Add(const cRecording *Recording);
 
   cRecordingsFolderInfo::cFolderInfo *GetInfo(void) const;
 
@@ -44,9 +44,8 @@ cRecordingsFolderInfo::cFolderInfo::cFolderInfo(const char *Name, const char *Fu
 }
 
 
-cRecordingsFolderInfo::cRecordingsFolderInfo(cRecordings &Recordings)
-:_recordings(Recordings)
-,_root(NULL)
+cRecordingsFolderInfo::cRecordingsFolderInfo()
+   : _root(NULL)
 {
   Rebuild();
 }
@@ -59,44 +58,70 @@ cRecordingsFolderInfo::~cRecordingsFolderInfo(void)
 
 void cRecordingsFolderInfo::Rebuild(void)
 {
-  delete _root;
-  _root = new cFolderInfoIntern(NULL, "");
+   cFolderInfoIntern *info;
+   
+   delete _root;
+   _root = new cFolderInfoIntern(NULL, "");
+   
+#if defined (APIVERSNUM) && (APIVERSNUM >= 20301)
+   LOCK_RECORDINGS_READ;
+   const cRecordings* recordings = Recordings;
+
+   for (const cRecording *rec = recordings->First(); rec; rec = recordings->Next(rec)) 
+   {
+      info = _root->Find(rec->Folder(), true);
+      info->Add(rec);
+   }   
+#else
+   cString folder;
+   cThreadLock RecordingsLock(&Recordings);
+
+   // re-get state with lock held
+
+   Recordings.StateChanged(_recState);
+
+   for (cRecording *rec = Recordings.First(); rec; rec = Recordings.Next(rec)) 
+   {
+#  if APIVERSNUM < 20102
 
-  cThreadLock RecordingsLock(&_recordings);
-  // re-get state with lock held
-  _recordings.StateChanged(_recState);
-  cFolderInfoIntern *info;
-  cString folder;
-  for (cRecording *rec = _recordings.First(); rec; rec = _recordings.Next(rec)) {
-#if APIVERSNUM < 20102
-      //cRecording::Folder() first available since VDR 2.1.2
       const char *recName = rec->Name();
-      if (const char *s = strrchr(recName, FOLDERDELIMCHAR)) {
+      if (const char *s = strrchr(recName, FOLDERDELIMCHAR)) 
+      {
          folder = recName;
          folder.Truncate(s - recName);
-         }
+      }
       else
          folder = "";
-#else
+#  else
       folder = rec->Folder();
-#endif
+#  endif
       info = _root->Find(*folder, true);
       info->Add(rec);
       }
+#endif
 }
 
 cRecordingsFolderInfo::cFolderInfo  *cRecordingsFolderInfo::Get(const char *Folder)
 {
-  cMutexLock lock(&_rootLock);
-
-  if (_recordings.StateChanged(_recState) || (_root == NULL))
-     Rebuild();
-
-  cFolderInfoIntern *info = _root->Find(Folder, false);
-  if (info == NULL)
-     return NULL;
-
-  return info->GetInfo();
+   cMutexLock lock(&_rootLock);
+   
+#if defined (APIVERSNUM) && (APIVERSNUM >= 20301)
+   static cStateKey recordingsKey;
+   const cRecordings* recordings = cRecordings::GetRecordingsRead(recordingsKey);
+   int recStateChanged = recordings != 0;
+   if (recordings) recordingsKey.Remove();
+#else
+   int recStateChanged = Recordings.StateChanged(_recState);
+#endif
+   
+   if (recStateChanged || (_root == NULL))
+      Rebuild();
+   
+   cFolderInfoIntern *info = _root->Find(Folder, false);
+   if (info == NULL)
+      return NULL;
+   
+   return info->GetInfo();
 }
 
 cString cRecordingsFolderInfo::DebugOutput(void) const
@@ -154,7 +179,7 @@ cRecordingsFolderInfo::cFolderInfoIntern *cRecordingsFolderInfo::cFolderInfoInte
   return info;
 }
 
-void cRecordingsFolderInfo::cFolderInfoIntern::UpdateData(cRecording *Recording)
+void cRecordingsFolderInfo::cFolderInfoIntern::UpdateData(const cRecording *Recording)
 {
   // count every recording
   _count++;
@@ -176,7 +201,7 @@ cRecordingsFolderInfo::cFolderInfoIntern *cRecordingsFolderInfo::cFolderInfoInte
   return NULL;
 }
 
-void cRecordingsFolderInfo::cFolderInfoIntern::Add(cRecording *Recording)
+void cRecordingsFolderInfo::cFolderInfoIntern::Add(const cRecording *Recording)
 {
   if (Recording == NULL)
      return;
diff --git a/extensions/recfolderinfo.h b/extensions/recfolderinfo.h
index 8148ea7..6e9f920 100644
--- a/extensions/recfolderinfo.h
+++ b/extensions/recfolderinfo.h
@@ -9,7 +9,6 @@ public:
   class cFolderInfoIntern;
 
 private:
-  cRecordings        &_recordings;
   int                 _recState;
   cFolderInfoIntern  *_root;
   mutable cMutex      _rootLock;
@@ -28,7 +27,7 @@ public:
     cFolderInfo(const char *Name, const char *FullName, time_t Latest, int Count, const char *LatestFileName);
   };
 
-  cRecordingsFolderInfo(cRecordings &Recordings);
+  cRecordingsFolderInfo();
   ~cRecordingsFolderInfo(void);
 
   // caller must delete the cInfo object!
@@ -40,4 +39,4 @@ public:
   cString DebugOutput(void) const;
 };
 
-#endif // __RECFOLDERINFO_H
\ No newline at end of file
+#endif // __RECFOLDERINFO_H
diff --git a/extensions/timers.c b/extensions/timers.c
index b93aada..4f81b2a 100644
--- a/extensions/timers.c
+++ b/extensions/timers.c
@@ -6,7 +6,7 @@ static int CompareTimers(const void *a, const void *b) {
     return (*(const cTimer **)a)->Compare(**(const cTimer **)b);
 }
 
-cGlobalSortedTimers::cGlobalSortedTimers(bool forceRefresh) : cVector<const cTimer *>(Timers.Count()) {
+cGlobalSortedTimers::cGlobalSortedTimers(int timerCount, bool forceRefresh) : cVector<const cTimer*>(timerCount) {
     static bool initial = true;
     static cRemoteTimerRefresh *remoteTimerRefresh = NULL;
     localTimer = NULL;
@@ -16,8 +16,16 @@ cGlobalSortedTimers::cGlobalSortedTimers(bool forceRefresh) : cVector<const cTim
     //check if remotetimers plugin is available
     static cPlugin* pRemoteTimers = cPluginManager::GetPlugin("remotetimers");
 
-    cSchedulesLock SchedulesLock;
-    const cSchedules *Schedules = cSchedules::Schedules(SchedulesLock);
+#if defined (APIVERSNUM) && (APIVERSNUM >= 20301)
+    LOCK_TIMERS_READ;
+    LOCK_SCHEDULES_READ;
+    const cTimers* timers = Timers;
+    const cSchedules* schedules = Schedules;
+#else
+    const cTimers* timers = &Timers;
+    cSchedulesLock schedulesLock;
+    const cSchedules* schedules = (cSchedules*)cSchedules::Schedules(schedulesLock);
+#endif
     
     if (pRemoteTimers && initial) {
         cString errorMsg;
@@ -25,7 +33,7 @@ cGlobalSortedTimers::cGlobalSortedTimers(bool forceRefresh) : cVector<const cTim
         initial = false;
     }
 
-    for (cTimer *Timer = Timers.First(); Timer; Timer = Timers.Next(Timer)) {
+    for (const cTimer *Timer = timers->First(); Timer; Timer = timers->Next(Timer)) {
         if (Timer->HasFlags(tfActive))
             Append(Timer);
     }
@@ -34,7 +42,7 @@ cGlobalSortedTimers::cGlobalSortedTimers(bool forceRefresh) : cVector<const cTim
     if (pRemoteTimers) {
         cTimer* remoteTimer = NULL;
         while (pRemoteTimers->Service("RemoteTimers::ForEach-v1.0", &remoteTimer) && remoteTimer != NULL) {
-            remoteTimer->SetEventFromSchedule(Schedules); // make sure the event is current
+            remoteTimer->SetEventFromSchedule(schedules); // make sure the event is current
             if (remoteTimer->HasFlags(tfActive))
                 Append(remoteTimer);
         }
@@ -50,7 +58,7 @@ cGlobalSortedTimers::cGlobalSortedTimers(bool forceRefresh) : cVector<const cTim
                 localTimer[i] = true;
             } else {
                 localTimer[i] = false;
-                for (cTimer *Timer = Timers.First(); Timer; Timer = Timers.Next(Timer)) {
+                for (const cTimer *Timer = timers->First(); Timer; Timer = timers->Next(Timer)) {
                     if (Timer == At(i)) {
                         localTimer[i] = true;
                         break;
@@ -109,13 +117,18 @@ cRemoteTimerRefresh::~cRemoteTimerRefresh(void) {
 }
 
 void cRemoteTimerRefresh::Action(void) {    
-    #define REFESH_INTERVALL_MS 30000
+#define REFESH_INTERVALL_MS 30000
     while (Running()) {
-        cCondWait::SleepMs(REFESH_INTERVALL_MS);      
-        if (!cOsd::IsOpen()) {//make sure that no timer is currently being edited
+        cCondWait::SleepMs(REFESH_INTERVALL_MS);
+        // make sure that no timer is currently being edited
+        if (!cOsd::IsOpen()) {
             cGlobalSortedTimers(true);
+#if defined (APIVERSNUM) && (APIVERSNUM >= 20301)
+            LOCK_TIMERS_WRITE;
+            Timers->SetModified();
+#else
             Timers.SetModified();
+#endif
         }
     }
 }
-      
\ No newline at end of file
diff --git a/extensions/timers.h b/extensions/timers.h
index aba873c..fdbca31 100644
--- a/extensions/timers.h
+++ b/extensions/timers.h
@@ -8,7 +8,7 @@ class cGlobalSortedTimers : public cVector<const cTimer *> {
     private:
         bool *localTimer;
     public:
-        cGlobalSortedTimers(bool forceRefresh = false);
+        cGlobalSortedTimers(int timerCount, bool forceRefresh = false);
         virtual ~cGlobalSortedTimers(void);
         bool IsRemoteTimer(int i);
         int NumTimerConfilicts(void);