I ran into this same system similar after upgrading to Jaunty on a system that uses autofs and network-manager. The problem was that network-manager by default does not share the connection, so when the user logged out, networking stopped and any network filesystems that were mounted when the user logged out would cause shutdown to hang. The workaround was to check 'Available to all users' for the network connection in network-manager.
-- Jaunty & Interpid: won't power off on shutdown or reboot https://bugs.launchpad.net/bugs/326988 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