--- qt-x11-opensource-src-4.5.1/src/dbus/qdbusintegrator.cpp	2009-04-22 01:57:41.000000000 +0200
+++ qt-x11-opensource-src-4.5.1_fixed/src/dbus/qdbusintegrator.cpp	2009-06-18 12:51:49.406871708 +0200
@@ -1875,6 +1875,7 @@
 
     q_dbus_message_unref(msg);
     pcall->replyMessage = QDBusMessage::createError(lastError);
+	pcall->connection = this;
     return pcall;
 }