Please try this from the console to see if there are any kernel oopses.
** Changed in: linux-meta (Ubuntu)
Sourcepackagename: linux-meta => linux-source-2.6.15
Status: Unconfirmed => Needs Info-- Ejecting firewire HD (iPod) freezes kernel https://launchpad.net/bugs/52943 -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
