As a note this may still is happening in herd5 - alternate. An install on root raid after initial reboot drops down to initramfs with the 'no job control' error message. I fixed this by following the instructions at http://ubuntuforums.org/showthread.php?p=2272436
Not sure if this is the exact same issue. However, it appears from other bugs here that feisty and root raid aren't mixing well :( -- /dev/md0 construct not supported in Feisty https://launchpad.net/bugs/85822 -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs