diff -r aa5a574040a4 -r a3cc46f37772 harvester/common/src/harvesterpluginfactory.cpp
--- a/harvester/common/src/harvesterpluginfactory.cpp	Tue Jul 06 14:44:37 2010 +0300
+++ b/harvester/common/src/harvesterpluginfactory.cpp	Fri Sep 17 16:54:49 2010 +0300
@@ -68,6 +68,12 @@
 	{
 	WRITELOG( "CHarvesterPluginFactory::~CHarvesterPluginFactory()" );
 	
+	delete iLastConfirmedContainerExt;
+	iLastConfirmedContainerExt = NULL;
+	
+	delete iLastConfirmedSupportedExt;
+	iLastConfirmedSupportedExt = NULL;
+	
     if (iHarvesterEventManager)
         {
         iHarvesterEventManager->ReleaseInstance();
@@ -93,50 +99,9 @@
 // GetObjectDef
 // ---------------------------------------------------------------------------
 //
-EXPORT_C void CHarvesterPluginFactory::GetObjectDefL( CHarvesterData& aHD, TDes& aObjectDef )
+EXPORT_C void CHarvesterPluginFactory::GetObjectDefL( CHarvesterData& /*aHD*/, TDes& aObjectDef )
 	{
-	TPtrC extPtr;
-	if( MdsUtils::GetExt( aHD.Uri(), extPtr ) )
-		{
-		RPointerArray<CHarvesterPluginInfo> supportedPlugins;
-		CleanupClosePushL( supportedPlugins );
-		GetSupportedPluginsL( supportedPlugins, extPtr );
-		
-		const TInt sCount = supportedPlugins.Count();
-		if( sCount == 1 )
-			{
-			CHarvesterPluginInfo* info = supportedPlugins[0];
-			if( info->iObjectTypes.Count() == 1 )
-				{
-				aObjectDef.Copy( *(info->iObjectTypes[0]) );
-				aHD.SetHarvesterPluginInfo( info );
-				CleanupStack::PopAndDestroy( &supportedPlugins );
-				return;
-				}
-			}
-		for( TInt i = sCount - 1; i >=0; i-- )
-			{
-			CHarvesterPluginInfo* info = supportedPlugins[i];
-			if ( !(info->iPlugin) )
-				{
-				info->iPlugin = CHarvesterPlugin::NewL( info->iPluginUid );
-				info->iPlugin->SetQueue( info->iQueue );
-				info->iPlugin->SetHarvesterPluginFactory( *this );  
-				info->iPlugin->SetBlacklist( *iBlacklist );
-				}
-			info->iPlugin->GetObjectType( aHD.Uri(), aObjectDef );
-			if( aObjectDef.Length() > 0 )
-				{
-				aHD.SetHarvesterPluginInfo( info );
-				break;
-				}
-			}
-		CleanupStack::PopAndDestroy( &supportedPlugins );
-		}
-	else
-		{
-		aObjectDef.Zero();
-		}
+	aObjectDef.Zero();
 	}
 	
 // ---------------------------------------------------------------------------
@@ -209,7 +174,8 @@
 			
 		if( aHD->ObjectType() == EFastHarvest || aHD->Origin() == MdeConstants::Object::ECamera )
 		   	{
-		   	hpi->iQueue.Insert( aHD, 0 );
+		   	hpi->iQueue.InsertL( aHD, 0 );
+		   	
 		   	if( !hpi->iPlugin->IsActive() )
 		   	    {
 	            hpi->iPlugin->SetPriority( KHarvesterPriorityHarvestingPlugin + 1 );
@@ -328,11 +294,9 @@
     
     pluginInfo->iPluginUid = aPluginUid;
     
-#ifdef MDS_HARVESTERPLUGINS_ON_BOOT
     pluginInfo->iPlugin = CHarvesterPlugin::NewL( pluginInfo->iPluginUid );
     pluginInfo->iPlugin->SetQueue( pluginInfo->iQueue );
     pluginInfo->iPlugin->SetHarvesterPluginFactory( *this );
-#endif
     
     iHarvesterPluginInfoArray.AppendL( pluginInfo );
     CleanupStack::Pop( pluginInfo );
@@ -372,6 +336,13 @@
 	TPtrC extPtr;
 	if( MdsUtils::GetExt( aFileName, extPtr ) )
 		{
+        if( iLastConfirmedSupportedExt &&
+            extPtr.CompareF( iLastConfirmedSupportedExt->Des() ) == 0 )
+            {
+            // Extension has previously been confirmed to be 
+            // supported file extension, no need to ask from plugins
+            return ETrue;
+            }
 		TInt pluginInfoCount = iHarvesterPluginInfoArray.Count();
 		TInt extCount = 0;
 		for ( TInt i = pluginInfoCount; --i >= 0; )
@@ -385,6 +356,9 @@
 				TInt result = MdsUtils::Compare( *ext, extPtr );
 				if ( result == 0 )
 					{
+                    delete iLastConfirmedSupportedExt;
+                    iLastConfirmedSupportedExt = NULL;
+                    iLastConfirmedSupportedExt = extPtr.Alloc();				    
 					return ETrue;
 					}
 				}
@@ -400,6 +374,14 @@
 	
 	if( MdsUtils::GetExt( aURI, extPtr ) )
 		{
+	    if( iLastConfirmedContainerExt &&
+	        extPtr.CompareF( iLastConfirmedContainerExt->Des() ) == 0 )
+	        {
+	        // Extension has previously been confirmed to be 
+	        // container file extension, no need to ask from plugins
+	        return ETrue;
+	        }
+	
 		RPointerArray<CHarvesterPluginInfo> supportedPlugins;
 		CleanupClosePushL( supportedPlugins );
 		GetSupportedPluginsL( supportedPlugins, extPtr );
@@ -409,6 +391,9 @@
 			if( info->iObjectTypes.Count() >  1 )
 				{
 				isContainerFile = ETrue;
+				delete iLastConfirmedContainerExt;
+				iLastConfirmedContainerExt = NULL;
+				iLastConfirmedContainerExt = extPtr.Alloc();
 				break;
 				}
 			}
@@ -437,6 +422,7 @@
 
 EXPORT_C void CHarvesterPluginFactory::SendHarvestingStatusEventL( TBool aStarted )
     {
+    WRITELOG( "CHarvesterPluginFactory::SendHarvestingStatusEventL" );
     const TInt pluginInfoCount = iHarvesterPluginInfoArray.Count();
     TBool itemsLeft( EFalse );
     TBool allPluginsOnIdle( ETrue );
@@ -460,6 +446,7 @@
     
     if( !iHarvesting && itemsLeft && aStarted )
         {
+        WRITELOG( "CHarvesterPluginFactory::SendHarvestingStatusEventL - overall started" );
         iHarvesting = ETrue;
         iHarvesterEventManager->SendEventL( EHEObserverTypeOverall, EHEStateStarted );
         // This next line is for caching the harvester started event for observers registering
@@ -469,6 +456,7 @@
         }
     else if( iHarvesting && (!itemsLeft || allPluginsOnIdle) && !aStarted )
         {
+        WRITELOG( "CHarvesterPluginFactory::SendHarvestingStatusEventL - overall finished" );
         iHarvesting = EFalse;                       
         iHarvesterEventManager->SendEventL( EHEObserverTypeOverall, EHEStateFinished );
         iHarvesterEventManager->DecreaseItemCountL( EHEObserverTypeOverall, KCacheItemCountForEventCaching );
@@ -482,7 +470,7 @@
         {
         if( iHarvesterPluginInfoArray[i]->iPlugin && aPaused )
             {
-            iHarvesterPluginInfoArray[i]->iPlugin->Cancel();
+            iHarvesterPluginInfoArray[i]->iPlugin->StopHarvest();
             }
         else if( iHarvesterPluginInfoArray[i]->iPlugin )
             {
@@ -491,3 +479,56 @@
         }
     }
 
+EXPORT_C void CHarvesterPluginFactory::GetObjectDefL( CHarvesterData* aHD, TDes& aObjectDef )
+    {
+    TPtrC extPtr;
+    if( MdsUtils::GetExt( aHD->Uri(), extPtr ) )
+        {
+        RPointerArray<CHarvesterPluginInfo> supportedPlugins;
+        CleanupClosePushL( supportedPlugins );
+        GetSupportedPluginsL( supportedPlugins, extPtr );
+        
+        const TInt sCount = supportedPlugins.Count();
+        if( sCount == 1 )
+            {
+            CHarvesterPluginInfo* info = supportedPlugins[0];
+            if( info->iObjectTypes.Count() == 1 )
+                {
+                aObjectDef.Copy( *(info->iObjectTypes[0]) );
+                aHD->SetHarvesterPluginInfo( info );
+                CleanupStack::PopAndDestroy( &supportedPlugins );
+                return;
+                }
+            }
+        for( TInt i = sCount - 1; i >=0; i-- )
+            {
+            CHarvesterPluginInfo* info = supportedPlugins[i];
+            if ( !(info->iPlugin) )
+                {
+                info->iPlugin = CHarvesterPlugin::NewL( info->iPluginUid );
+                info->iPlugin->SetQueue( info->iQueue );
+                info->iPlugin->SetHarvesterPluginFactory( *this );  
+                info->iPlugin->SetBlacklist( *iBlacklist );
+                }
+            info->iPlugin->GetObjectType( aHD->Uri(), aObjectDef );
+            // It is possible for unmount to occure while we are waiting
+            // for GetObjectType to return, thus check aHD for validity
+            if( aHD && aObjectDef.Length() > 0 )
+                {
+                aHD->SetHarvesterPluginInfo( info );
+                break;
+                }
+            else if( !aHD )
+                {
+                break;
+                }
+            }
+        CleanupStack::PopAndDestroy( &supportedPlugins );
+        }
+    else
+        {
+        aObjectDef.Zero();
+        }
+    }
+
+