I think it is related to X. The first poster related it to network manager, and I think this also can make sense. I have no idea why, but it seems that network-manager causes the systems to hang in some cases. For instance, I reported a frequent bug concerning this behaviour at startup here https://bugs.launchpad.net/ubuntu/+bug/143990
-- system hangs at shutdown https://bugs.launchpad.net/bugs/138691 You received this bug notification because you are a member of Ubuntu Bugs, which is the bug contact for Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
