I got the attached oops when removing a snapshot of a MySQL binary log volume, it might be related.
kernel version 2.6.15-27-amd64-server #1 SMP Sat Sep 16 02:04:37 UTC 2006 x86_64 GNU/Linux ** Attachment added: "Oops and SysRq-t output" http://librarian.launchpad.net/5939635/kern.log -- LVM Snapshot removal causes intermittent kernel panic https://launchpad.net/bugs/71567 -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs