--- a/src/core/callback.h	Sun Mar 16 14:35:32 2008 +0000
+++ b/src/core/callback.h	Sun Mar 16 18:42:23 2008 +0100
@@ -71,7 +71,7 @@
   }
 };
 
-class CallbackImplBase : public ObjectBase 
+class CallbackImplBase
 {
 public:
   CallbackImplBase ()