Nejde update-manager

[Chaluha]

Nainstaloval som Amarok,Thunderbird,VLC a ovladace od Nvidie na novu instalaciu Ubuntu 8.10(32 bit), ktora bola predtym update/managerom aktualizovana a odvtedy mi update manager nejde a pri supsteni len preblikne.
Vedel by niekto poradit ako to vyriesit?
Tu je vypis z terminalu

Kód: [Vybrat]

@ubuntu:~$ update-manager
Traceback (most recent call last):
  File "/usr/bin/update-manager", line 92, in <module>
    app.main(options)
  File "/usr/lib/python2.5/site-packages/UpdateManager/UpdateManager.py", line 1083, in main
    self.fillstore()
  File "/usr/lib/python2.5/site-packages/UpdateManager/UpdateManager.py", line 926, in fillstore
    self.update_count()
  File "/usr/lib/python2.5/site-packages/UpdateManager/UpdateManager.py", line 663, in update_count
    if self._get_last_apt_get_update_text() is not None:
  File "/usr/lib/python2.5/site-packages/UpdateManager/UpdateManager.py", line 638, in _get_last_apt_get_update_text
    ago_days) % ago_days
TypeError: not all arguments converted during string formatting