Traceback (most recent call last):
  File "/usr/share/screen-resolution-extra/policyui.py", line 224, in on_button1_clicked
    self.conf = get_xkit_service()
  File "/usr/share/screen-resolution-extra/policyui.py", line 117, in get_xkit_service
    granted = policy_auth.obtain_authorization(POLICY_KIT_ACTION, widget)
  File "/usr/lib/python2.5/site-packages/ScreenResolution/policykit.py", line 65, in obtain_authorization
    granted = self.auth_agent.ObtainAuthorization(action_id, xid, pid)
  File "/var/lib/python-support/python2.5/dbus/proxies.py", line 68, in __call__
    return self._proxy_method(*args, **keywords)
  File "/var/lib/python-support/python2.5/dbus/proxies.py", line 140, in __call__
    **keywords)
  File "/var/lib/python-support/python2.5/dbus/connection.py", line 607, in call_blocking
    message, timeout)
DBusException: org.freedesktop.DBus.Error.NoReply: Did not receive a reply. Possible causes include: the remote application did not send a reply, the message bus security policy blocked the reply, the reply timeout expired, or the network connection was broken.