Need to know exactly what kernel version you are using. First off, you should be able to boot the old kernel, and yaboot prompt type "old" (hitting TAB should show you the available options).
Run this command: dpkg -l | grep linux-source Send the output of that command. ** Changed in: linux-source-2.6.20 (Ubuntu) Status: Unconfirmed => Needs Info -- latest feisty kernel does not boot https://launchpad.net/bugs/84059 -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs