The Inspiron 6400 has a JMicron IDE controller for which there is a critical fix in 2.6.20-13. Try the Feisty daily build ISO: http://cdimage.ubuntu.com/daily-live/current
** Changed in: linux-source-2.6.20 (Ubuntu) Assignee: (unassigned) => Tim Gardner Status: Unconfirmed => Needs Info -- No startup with kernel 2.6.20.12 in Feisty https://launchpad.net/bugs/95337 -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs