Could you give us the information from https://wiki.ubuntu.com/DebuggingRemovableDevices?
Thanks ** Changed in: Ubuntu Status: Unconfirmed => Needs Info -- With iPod plugged in, Dapper will not boot https://launchpad.net/bugs/52982 -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs