--- ../vdr-1.7.29.plain//eit.c  2012-06-04 12:26:10.000000000 +0200
+++ eit.c       2012-07-30 10:19:34.841894485 +0200
@@ -74,6 +74,9 @@
       if (!pEvent || handledExternally) {
          if (OnlyRunningStatus)
             continue;
+         if (handledExternally)
+            if (!EpgHandlers.IsUpdate(SiEitEvent.getEventId(), StartTime, Tid, getVersionNumber()))
+               continue;
          // If we don't have that event yet, we create a new one.
          // Otherwise we copy the information into the existing event anyway, because the data might have changed.
          pEvent = newEvent = new cEvent(SiEitEvent.getEventId());
--- ../vdr-1.7.29.plain//epg.c  2012-06-04 12:26:10.000000000 +0200
+++ epg.c       2012-07-30 10:21:51.153899306 +0200
@@ -1340,6 +1340,15 @@
   return false;
 }
 
+bool cEpgHandlers::IsUpdate(tEventID EventID, time_t StartTime, uchar TableID, uchar Version)
+{
+  for (cEpgHandler *eh = First(); eh; eh = Next(eh)) {
+      if (eh->IsUpdate(EventID, StartTime, TableID, Version))
+         return true;
+      }
+  return false;
+}
+
 void cEpgHandlers::SetEventID(cEvent *Event, tEventID EventID)
 {
   for (cEpgHandler *eh = First(); eh; eh = Next(eh)) {
--- ../vdr-1.7.29.plain//epg.h  2012-06-04 12:26:10.000000000 +0200
+++ epg.h       2012-07-30 10:20:15.705895929 +0200
@@ -250,6 +250,10 @@
           ///< source. Incoming EIT data is processed as usual, but any new EPG event
           ///< will not be added to the respective schedule. It's up to the EPG
           ///< handler to take care of this.
+  virtual bool IsUpdate(tEventID EventID, time_t StartTime, uchar TableID, uchar Version) { return false; }
+          ///<  VDR can't perform the update check (version, tid) for external handled events 
+          ///<  therefore the handle have to take care. Otherwise the parsing of 'non' updates will 
+          ///<  take a lot of resources
   virtual bool SetEventID(cEvent *Event, tEventID EventID) { return false; }
   virtual bool SetTitle(cEvent *Event, const char *Title) { return false; }
   virtual bool SetShortText(cEvent *Event, const char *ShortText) { return false; }
@@ -277,6 +281,7 @@
   bool IgnoreChannel(const cChannel *Channel);
   bool HandleEitEvent(cSchedule *Schedule, const SI::EIT::Event *EitEvent, uchar TableID, uchar Version);
   bool HandledExternally(const cChannel *Channel);
+  bool IsUpdate(tEventID EventID, time_t StartTime, uchar TableID, uchar Version);
   void SetEventID(cEvent *Event, tEventID EventID);
   void SetTitle(cEvent *Event, const char *Title);
   void SetShortText(cEvent *Event, const char *ShortText);