Comment 2 for bug 749322

StacktraceTop:
 menuproxy_prop_changed_cb (proxy=<value optimized out>, properties=0xb82630, invalidated=<value optimized out>, user_data=0x7f65b827b1a0) at /build/buildd/libdbusmenu-0.4.1/./libdbusmenu-glib/client.c:1130
 g_closure_invoke (closure=0x7f65b8268560, return_value=0x0, n_param_values=3, param_values=0x7f65b802d9e0, invocation_hint=0x7fff566fafb0) at /build/buildd/glib2.0-2.28.5/./gobject/gclosure.c:767
 signal_emit_unlocked_R (node=<value optimized out>, detail=0, instance=0x7f65b823b200, emission_return=0x0, instance_and_params=0x7f65b802d9e0) at /build/buildd/glib2.0-2.28.5/./gobject/gsignal.c:3252
 g_signal_emit_valist (instance=<value optimized out>, signal_id=<value optimized out>, detail=<value optimized out>, var_args=<value optimized out>) at /build/buildd/glib2.0-2.28.5/./gobject/gsignal.c:2983
 g_signal_emit (instance=<value optimized out>, signal_id=<value optimized out>, detail=<value optimized out>) at /build/buildd/glib2.0-2.28.5/./gobject/gsignal.c:3040