Comment 2 for bug 742136

StacktraceTop:
 ?? () from /usr/lib/compiz/libunityshell.so
 g_cclosure_marshal_VOID__VOID (closure=0x915dca0, return_value=0x0, n_param_values=1, param_values=0x8dddd18, invocation_hint=0xbfa51010, marshal_data=0x0) at /build/buildd/glib2.0-2.28.4/./gobject/gmarshal.c:79
 g_closure_invoke (closure=0x915dca0, return_value=0x0, n_param_values=1, param_values=0x8dddd18, invocation_hint=0xbfa51010) at /build/buildd/glib2.0-2.28.4/./gobject/gclosure.c:767
 signal_emit_unlocked_R (node=0x8de6800, detail=0, instance=0x8a76c50, emission_return=0x0, instance_and_params=0x8dddd18) at /build/buildd/glib2.0-2.28.4/./gobject/gsignal.c:3252
 g_signal_emit_valist (instance=0x8a76c50, signal_id=182, detail=0, var_args=0xbfa511cc "01y\263\214\006^\b\364\257(\267\030\022\245\277\023Jt\t") at /build/buildd/glib2.0-2.28.4/./gobject/gsignal.c:2983