That debug message is normal when you're not initially authorized to perform the action, by the looks of the gnome-panel code. What should happen next though is that the authentication dialog should appear. What is the output of "apt-cache policy policykit-gnome"?
That debug message is normal when you're not initially authorized to perform the action, by the looks of the gnome-panel code. What should happen next though is that the authentication dialog should appear. What is the output of "apt-cache policy policykit-gnome"?