diff -r d96eed154187 -r ca6d8a014f4b webengine/device/src/ServiceEventHandler.cpp
--- a/webengine/device/src/ServiceEventHandler.cpp	Tue Sep 14 23:23:58 2010 +0300
+++ b/webengine/device/src/ServiceEventHandler.cpp	Wed Sep 15 13:25:15 2010 +0300
@@ -41,6 +41,7 @@
     {
     iInterfaceFunc = (JSObject*)aInterfaceFunc;
     iCallbackFunc = (JSObject*)aCallbackFunc;
+    KJS::Collector::protect(iCallbackFunc);
     iTransId = aTransId;
     }
 
@@ -54,6 +55,7 @@
 //
 ServiceEventHandler::~ServiceEventHandler()
     {
+    KJS::Collector::unprotect(iCallbackFunc);
     }
 
 // ----------------------------------------------------------------------------