1. Yes, the machine hangs and I have to turn it off. 2. I attach here a screenshot of the error message.
3. The Google search `ubuntu boot "could not kill pid"` gives 11 hits, among them: http://ubuntuforums.org/showthread.php?t=346020 http://ubuntuforums.org/showthread.php?t=346436 https://answers.launchpad.net/ubuntu/+ticket/2690 the number of the process which "can't be killed" varies: 1837, 1915, 1814. On my laptop it is always 1984. ** Attachment added: "Screenshot of the machine after hanging" http://librarian.launchpad.net/5906729/DSCN1885.JPG -- boot process interrupted by "could not kill pid 1984" https://launchpad.net/bugs/81395 -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs