[help]What's happle,it is a bad thing

[newlad]

Offen happle this when i #sudo gedit .....

** (gedit:8531): CRITICAL **: gedit_mdi_set_state: assertion `GEDIT_IS_MDI (mdi)' failed

(gedit:8531): GLib-GObject-WARNING **: invalid uninstantiatable type `(null)' in cast to `BonoboMDI'

** (gedit:8531): CRITICAL **: bonobo_mdi_get_active_child: assertion `BONOBO_IS_MDI (mdi)' failed

(gedit:8531): GLib-GObject-WARNING **: invalid uninstantiatable type `(null)' in cast to `BonoboMDI'

** (gedit:8531): CRITICAL **: bonobo_mdi_get_active_window: assertion `BONOBO_IS_MDI (mdi)' failed

** (gedit:8531): CRITICAL **: gedit_utils_set_status: assertion `BONOBO_IS_WINDOW (win)' failed

** (gedit:8531): CRITICAL **: gedit_prefs_manager_get_int: assertion `gedit_prefs_manager->gconf_client != NULL' failed

** (gedit:8531): CRITICAL **: gedit_prefs_manager_get_bool: assertion `gedit_prefs_manager->gconf_client != NULL' failed

** (gedit:8531): CRITICAL **: gedit_prefs_manager_get_bool: assertion `gedit_prefs_manager->gconf_client != NULL' failed

** (gedit:8531): CRITICAL **: gedit_prefs_manager_get_int: assertion `gedit_prefs_manager->gconf_client != NULL' failed

(gedit:8531): GLib-GObject-WARNING **: invalid uninstantiatable type `<invalid>' in cast to `GObject'

(gedit:8531): GLib-GObject-WARNING **: instance of invalid non-instantiatable type `<invalid>'

(gedit:8531): GLib-GObject-CRITICAL **: g_signal_connect_object: assertion `G_TYPE_CHECK_INSTANCE (instance)' failed

after this , i log out ,i can not log in

and some time ,when i open the programs under Administration,the program will wait for serval minutes
why?