Instructions by Justin Dugger solved my problem. I guess some kind of check script should be pushed as an update of some sort, to make sure this is solved on all systems.
Not that this matters in my case, I need to completely re-install Ubuntu because of all the upgrade issues :( -- Admin tools require admin group membership https://launchpad.net/bugs/59946 -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs