diff -Nru sc-hg-20120721/cam.c sc-hg-20120721-ignore_caid/cam.c
--- sc-hg-20120721/cam.c	2012-07-22 17:25:10.000000000 +0000
+++ sc-hg-20120721-ignore_caid/cam.c	2012-07-22 17:40:38.000000000 +0000
@@ -317,7 +317,7 @@
       }
     else {
       LBPUT(" ->");
-      if(!overrides.Ignore(source,transponder,caid)) {
+      if(!overrides.Ignore(source,transponder,caid,0)) {
         int Pri=0;
         while((sys=cSystems::FindBySysId(caid,!softCSA,Pri))) {
           Pri=sys->Pri();
@@ -1371,7 +1371,7 @@
 {
   int ident, pri=0;
   while(1) {
-    if(overrides.Ignore(n->source,n->transponder,n->caId)) break;
+    if(overrides.Ignore(n->source,n->transponder,n->caId,n->provId)) break;
     if(!n->Cached()) ident=cSystems::FindIdentBySysId(n->caId,!cam->IsSoftCSA(filterCwIndex==0),pri);
     else ident=(pri==0) ? cSystems::FindIdentBySysName(n->caId,!cam->IsSoftCSA(filterCwIndex==0),n->name,pri) : 0;
     if(ident<=0) break;
@@ -1496,10 +1496,6 @@
         int sysId=WORD(buff,index+2,0xFFFF);
         if(SysId!=0xFFFF && sysId!=SysId) continue;
         if(dolog) LDUMP(L_CORE_ECM,&buff[index+2],buff[index+1],"%s: descriptor",id);
-        if(overrides.Ignore(filterSource,filterTransponder,sysId)) {
-          if(dolog) PRINTF(L_CORE_ECM,"%s: system %04x ignored",id,sysId);
-          continue;
-          }
         int sysPri=0;
         cSystem *sys;
         while((sys=cSystems::FindBySysId(sysId,!cam->IsSoftCSA(filterCwIndex==0),sysPri))) {
@@ -1514,6 +1510,10 @@
               n->SetSource(filterSid,filterSource,filterTransponder);
               n->SetDvb(cam->Adapter(),cam->Frontend());
               n->AddCaDescr(&buff[index],buff[index+1]+2);
+              if(overrides.Ignore(filterSource,filterTransponder,n->caId,n->provId)) {
+                if(dolog) PRINTF(L_CORE_ECM,"%s: system %04x - id %04x ignored",id,n->caId,n->provId);
+                continue;
+                }
               overrides.UpdateEcm(n,dolog);
               LBSTARTF(L_CORE_ECM);
               if(dolog) LBPUT("%s: found %04x(%04x) (%s) id %04x with ecm %x/%x ",id,n->caId,n->emmCaId,n->name,n->provId,n->ecm_pid,n->ecm_table);
@@ -1669,7 +1669,7 @@
     const caid_t *ids=ch->Caids();
     while(*ids) {
       int pri=0;
-      if(overrides.Ignore(ch->Source(),ch->Transponder(),*ids))
+      if(overrides.Ignore(ch->Source(),ch->Transponder(),*ids,0))
         ch->Del(*ids);
       else {
         char c=cache[*ids];
diff -Nru sc-hg-20120721/override.c sc-hg-20120721-ignore_caid/override.c
--- sc-hg-20120721/override.c	2012-07-22 17:25:10.000000000 +0000
+++ sc-hg-20120721-ignore_caid/override.c	2012-07-22 17:40:38.000000000 +0000
@@ -452,11 +452,12 @@
 
 class cOverrideIgnore : public cOverride {
 private:
-  int num, caid[OV_MAXIGNORES];
+  int num, caid[OV_MAXIGNORES], prov[OV_MAXIGNORES];
+  bool UsesProvId(int caid);
 public:
   cOverrideIgnore(void) { type=OV_IGNORE; }
   virtual bool Parse(char *str);
-  bool Ignore(int Caid);
+  bool Ignore(int Caid, int Prov);
   };
 
 bool cOverrideIgnore::Parse(char *str)
@@ -465,26 +466,40 @@
     num=0;
     int n=-1;
     do {
+      prov[num]=-1;
       int l=n+1;
-      if(sscanf(&str[l],"%x%n",&caid[num],&n)!=1) {
+      if(sscanf(&str[l],"%x%n/%x%n",&caid[num],&n,&prov[num],&n)<1) {
         PRINTF(L_CORE_LOAD,"override: IGNORE format error");
         return false;
         }
+      if(prov[num]>=0 && !UsesProvId(caid[num])) {
+        PRINTF(L_CORE_LOAD,"override: IGNORE provider ID not supported for caid %04x",caid[num]);
+        return false;
+        }
       n+=l; num++;
       } while(num<OV_MAXIGNORES && str[n]==':');
     LBSTART(L_CORE_OVER);
-    LBPUT("ignore: %s - caids",*Print());
-    for(int i=0; i<num; i++) LBPUT(" %02x",caid[i]);
+    LBPUT("ignore: %s - chain",*Print());
+    for(int i=0; i<num; i++) LBPUT(prov[i]>=0 ? " %04x/%x":" %04x",caid[i],prov[i]);
     LBEND();
     return true;
     }
   return false;
 }
 
-bool cOverrideIgnore::Ignore(int Caid)
+bool cOverrideIgnore::UsesProvId(int caid)
+{
+  switch(caid>>8) {
+    case 0x01:
+    case 0x05: return true;
+    }
+  return false;
+}
+
+bool cOverrideIgnore::Ignore(int Caid, int Prov)
 {
   for(int i=0; i<num; i++)
-    if(Caid==caid[i]) return true;
+    if(Caid==caid[i] && (prov[i]<0 || Prov==prov[i])) return true;
   return false;
 }
 
@@ -636,13 +651,13 @@
   return res;
 }
 
-bool cOverrides::Ignore(int source, int transponder, int caid)
+bool cOverrides::Ignore(int source, int transponder, int caid, int prov)
 {
   bool res=false;
   ListLock(false);
   for(cOverride *ov=0; (ov=Find(OV_IGNORE,-1,source,transponder,ov)) && !res;) {
     cOverrideIgnore *ovi=dynamic_cast<cOverrideIgnore *>(ov);
-    if(ovi && ovi->Ignore(caid)) res=true;
+    if(ovi && ovi->Ignore(caid,prov)) res=true;
     }
   ListUnlock();
   return res;
diff -Nru sc-hg-20120721/override.h sc-hg-20120721-ignore_caid/override.h
--- sc-hg-20120721/override.h	2012-07-22 17:25:10.000000000 +0000
+++ sc-hg-20120721-ignore_caid/override.h	2012-07-22 17:40:38.000000000 +0000
@@ -95,7 +95,7 @@
   int GetCat(int source, int transponder, unsigned char *buff, int len);
   void UpdateEcm(cEcmInfo *ecm, bool log);
   bool AddEmmPids(int caid, int source, int transponder, cPids *pids, int pid);
-  bool Ignore(int source, int transponder, int caid);
+  bool Ignore(int source, int transponder, int caid, int prov);
   int GetEcmPrio(int source, int transponder, int caid, int prov);
   };