By any chance are all of you using KDM as your login manager? I'm thinking the shutdown only works when GDM is your login manager.
Try this to set it to GDM and see if you're affected still: sudo dpkg-reconfigure gdm -- Shutdown from XFCE Quit menu does not shut down the machine https://bugs.launchpad.net/bugs/196816 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs