ubuntu tweak 0.5.8 fatal error

[cequeta]

Distribution: Ubuntu 10.10
Application: Ubuntu Tweak 0.5.8
Desktop: gnome

Traceback (most recent call last):
  File "/usr/bin/ubuntu-tweak", line 109, in <module>
    from ubuntutweak.mainwindow import MainWindow
  File "/usr/lib/python2.6/dist-packages/ubuntutweak/mainwindow.py", line 148, in <module>
    MLOADER = ModuleLoader(modules.__path__[0])
  File "/usr/lib/python2.6/dist-packages/ubuntutweak/modules/__init__.py", line 28, in __init__
    package = __import__('.'.join([__name__, module]), fromlist=['modules'])
  File "/usr/lib/python2.6/dist-packages/ubuntutweak/modules/sourcecenter.py", line 44, in <module>
    from appcenter import AppView, CategoryView, AppParser, StatusProvider
  File "/usr/lib/python2.6/dist-packages/ubuntutweak/modules/appcenter.py", line 45, in <module>
    UPDATE_SETTING = GconfSetting(key='/apps/ubuntu-tweak/appcenter_update', type=bool)
  File "/usr/lib/python2.6/dist-packages/ubuntutweak/conf/gconfsetting.py", line 56, in __init__
    self.get_client().add_dir(self.get_dir(), gconf.CLIENT_PRELOAD_NONE)
GError: Tentativo di contattare il server di configurazione non riuscito. La causa più comune potrebbe essere un demone di sessione D-Bus mancante o mal configurato. Per maggiori informazioni, consultare http://projects.gnome.org/gconf/ (Dettagli - 1: Errore eseguendo il ping al server: IDL:omg.org/CORBA/COMM_FAILURE:1.0).