I've had this problem with Feisty and it is still present in Gutsy. I can even hear my hard disk park at the end of the shutdown sequence, but the computer doesn't actually turn off.
** Attachment added: "gzipped output of dmidecode and lshw" http://launchpadlibrarian.net/10459828/dmidecode%2Blshw.gz -- Shut Down won't power off https://bugs.launchpad.net/bugs/42160 You received this bug notification because you are a member of Ubuntu Bugs, which is a direct subscriber. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs