--- a/qtmobility/plugins/contacts/symbian/symbian_defines.pri	Fri Jun 11 14:26:25 2010 +0300
+++ b/qtmobility/plugins/contacts/symbian/symbian_defines.pri	Wed Jun 23 19:08:38 2010 +0300
@@ -7,6 +7,13 @@
         } else {
             message("TB 10.1 or later platform")
             DEFINES += SYMBIAN_BACKEND_USE_SQLITE
+            
+            # This will enable signals to be emitted sychronously with every
+            # operation instead of them beeing emitted when database event observer
+            # interface if called (HandleDatabaseEventL). This is an optimization
+            # for 10.1 platform. However enabling this will cause some problems
+            # with signals concerning adding/removing groups/group participants. 
+            DEFINES += SYMBIAN_BACKEND_SIGNAL_EMISSION_TWEAK
         }
     }