while the problem is probably different (no 64bit processor here) I still get the error reported here https://launchpad.net/distros/ubuntu/+bug/61848 with this -9 update, so this kernel build(s) must be buggy
-- kernel panic - not syncing https://launchpad.net/bugs/61877 -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs