Ubuntu
gnome-system-tools package

  1. Bug #187335
  2. Comment #24

Comment 24 for bug 187335

Revision history for this message
Daniel Martin Yerga (yerga) wrote :

I was hitting the same problem in Debian.

So it's how I have fixed it:
Go to synaptic or apt-get and then install policykit-gnome and libpolkit-gnome0

Please, comment if this fixed your problems.