#0  0x0805d765 in event_callback (event=0xbfeeab38, data=0x81130e0) at display.c:1800
  1795:           meta_display_screen_for_root (display, event->xcrossing.root))
  1796:         {
  1797:           MetaScreen *new_screen;
  1798:           new_screen = meta_display_screen_for_root (display, 
  1799:                                                      event->xcrossing.root);
  1800:           meta_workspace_focus_default_window (new_screen->active_workspace, 
  1801:                                                NULL,
  1802:                                                event->xcrossing.time);
  1803:         }
  1804: 
  1805:       /* Check if we've entered a window; do this even if window->has_focus to
#1  0x0809438f in filter_func (xevent=0xbfeeab38, event=0x80e5f70, data=0x80ff560) at ui.c:85
  80:              GdkEvent *event,
  81:              gpointer data)
  82: {
  83:   g_return_val_if_fail (ef != NULL, GDK_FILTER_CONTINUE);
  84: 
  85:   if ((* ef->func) (xevent, ef->data))
  86:     return GDK_FILTER_REMOVE;
  87:   else
  88:     return GDK_FILTER_CONTINUE;
  89: }
  90: 
#2  0xb7ada631 in gdk_event_apply_filters (xevent=0xbfeeab38, event=0x80e5f70, filters=0x24c)
#3  0xb7adc16f in gdk_event_translate (display=0x80dc000, event=0x80e5f70, xevent=0xbfeeab38, return_exposes=0)
#4  0xb7ade8fc in _gdk_events_queue (display=0x80dc000) at /build/buildd/gtk+2.0-2.11.6/gdk/x11/gdkevents-x11.c:2285
  [Error: /build/buildd/gtk+2.0-2.11.6/gdk/x11/gdkevents-x11.c was not found in source tree]
#5  0xb7adedff in gdk_event_dispatch (source=0x80e7850, callback=0, user_data=0x0)
#6  0xb788b18c in IA__g_main_context_dispatch (context=0x80c5340) at /build/buildd/glib2.0-2.14.0/glib/gmain.c:2076
  [Error: /build/buildd/glib2.0-2.14.0/glib/gmain.c was not found in source tree]
#7  0xb788e5cf in g_main_context_iterate (context=0x80c5340, block=1, dispatch=1, self=0x80c4c20)
#8  0xb788e979 in IA__g_main_loop_run (loop=0x80c53f0) at /build/buildd/glib2.0-2.14.0/glib/gmain.c:2885
  [Error: /build/buildd/glib2.0-2.14.0/glib/gmain.c was not found in source tree]
#9  0x0806f90a in main (argc=1, argv=0xbfeeb0a4) at main.c:392
  387:     g_free (meta_args.client_id);
  388:   
  389:   if (!meta_display_open ())
  390:     meta_exit (META_EXIT_ERROR);
  391:   
  392:   g_main_loop_run (meta_main_loop);
  393: 
  394:   {
  395:     GSList *displays;
  396:     GSList *tmp;
  397: 
#10 0xb75cc050 in __libc_start_main () from /lib/tls/i686/cmov/libc.so.6
#11 0x08053021 in _start ()