On exiting: (mozilla-bin:8792): Gtk-WARNING **: A floating object was finalized. This means that someone called g_object_unref() on an object that had only a floating reference; the initial floating reference is not owned by anyone and must be removed with gtk_object_sink() after a normal reference is obtained with g_object_ref(). mozilla-1.4-12
http://bugzilla.mozilla.org/show_bug.cgi?id=205226