Comment 2 for bug 728540

StacktraceTop:
 bamf_factory_view_for_path (factory=0x89f2d80, path=0x8c2d3c8 "/org/ayatana/bamf/window31457281") at bamf-factory.c:178
 bamf_matcher_on_view_opened (proxy=0x895c438, path=0x8c2d3c8 "/org/ayatana/bamf/window31457281", type=0x8c50480 "window", matcher=0x89f2c80) at bamf-matcher.c:128
 bamf_marshal_VOID__STRING_STRING (closure=0x89fe0f8, return_value=0x0, n_param_values=3, param_values=0x8c2d278, invocation_hint=0xbfb8a080, marshal_data=0x0) at bamf-marshal.c:84
 marshal_dbus_message_to_g_marshaller (closure=0x89fe0f8, return_value=0x0, n_param_values=3, param_values=0x8e636c0, invocation_hint=0xbfb8a080, marshal_data=0x0) at dbus-gproxy.c:1681
 g_closure_invoke (closure=0x89fe0f8, return_value=0x0, n_param_values=3, param_values=0x8e636c0, invocation_hint=0xbfb8a080) at /build/buildd/glib2.0-2.28.1/./gobject/gclosure.c:767