I fixed this by removing upstart from my Ubuntu installation. I know it's not the best solution but I finally got a working desktop again :)
I hope this helps in debugging this bug! -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1377727 Title: Desktop permissions (e.g shutdown, network, users) broken for all accounts after upgrade to 14.10 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/systemd/+bug/1377727/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs