Error: Contact with the server configuration failed, among the possible causes of the need to enable support TCP / IP networking for ORBit, or the presence of an old block NFS caused by a system crash. See http://www.gnome.org/projects/gconf/ for more information (details - 1: Error pinging the server: IDL: omg.org / CORBA / COMM_FAILURE: 1.0).

Yesterday, ubuntu tweak work fine. I updated my Desktop friday and, today, no update are available.
This morning, I run ubuntu tweak, but it show the follow fatal error message.

Distribution: Ubuntu 10.04 lucid
Application: Ubuntu Tweak 0.5.10
Desktop: gnome

Traceback (most recent call last):
  File "/usr/bin/ubuntu-tweak", line 110, in <module>
    launcher = TweakLauncher(session_bus, MainWindow())
  File "/usr/lib/python2.6/dist-packages/ubuntutweak/mainwindow.py", line 276, in __init__
    self.get_gui_state()
  File "/usr/lib/python2.6/dist-packages/ubuntutweak/mainwindow.py", line 351, in get_gui_state
    self.set_default_size(*TweakSettings.get_window_size())
  File "/usr/lib/python2.6/dist-packages/ubuntutweak/common/config.py", line 147, in get_window_size
    width = cls.config.get_value_from_key(cls.window_width, default=900)
  File "/usr/lib/python2.6/dist-packages/ubuntutweak/common/config.py", line 35, in get_value_from_key
    return self.get_value()
  File "/usr/lib/python2.6/dist-packages/ubuntutweak/conf/gconfsetting.py", line 103, in get_value
    self.set_value(self.__default)
  File "/usr/lib/python2.6/dist-packages/ubuntutweak/conf/gconfsetting.py", line 112, in set_value
    self.__client.set_value(self.__key, value)
GError: Contatto col server di configurazione non riuscito; tra le possibili cause la necessità di abilitare il supporto TCP/IP per ORBit o la presenza di un vecchio blocco NFS causato da un crash del sistema. Consultare http://www.gnome.org/projects/gconf/ per ulteriori informazioni (dettagli - 1: Errore eseguendo il ping al server: IDL:omg.org/CORBA/COMM_FAILURE:1.0).