I have a slightly different scenario here: I created a new user from the command line as I broke my original user (and that is another problem altogether) and while having fixed most permission problems using vigr, found that I couldn't shut the machine down or mount USB drives. Following the solution from christianwolf above, I looked at /etc/lightdm/lightdm.conf and found that autologin was set to the old username. Commenting that out and rebooting has given me access to the USB drive and I'm yet to test rebooting.
-- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/851055 Title: [Oneiric] 'Not Authorized' error given when mounting device To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/lightdm/+bug/851055/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
