Comment 2 for bug 749609

StacktraceTop:
 menuproxy_prop_changed_cb (proxy=0x92c2378, properties=0xb6b91860, invalidated=0x932ea18, user_data=0x9192f60) at ../../libdbusmenu-glib/client.c:1174
 _gio_marshal_VOID__VARIANT_BOXED (closure=0x9343230, return_value=0x0, n_param_values=3, param_values=0x936be20, invocation_hint=0xbfb4da90, marshal_data=0x0) at /build/buildd/glib2.0-2.28.4/./gio/gio-marshal.c:737
 g_closure_invoke (closure=0x9343230, return_value=0x0, n_param_values=3, param_values=0x936be20, invocation_hint=0xbfb4da90) at /build/buildd/glib2.0-2.28.4/./gobject/gclosure.c:767
 signal_emit_unlocked_R (node=0x91293d8, detail=0, instance=0x92c2378, emission_return=0x0, instance_and_params=0x936be20) at /build/buildd/glib2.0-2.28.4/./gobject/gsignal.c:3252
 g_signal_emit_valist (instance=0x92c2378, signal_id=163, detail=0, var_args=0xbfb4dc54 "\004") at /build/buildd/glib2.0-2.28.4/./gobject/gsignal.c:2983