Check in /var/log/kern.log - it should contain the logs from the kernel.
** Changed in: linux-source-2.6.15 (Ubuntu)
Status: Unconfirmed => Needs Info-- 2.6.15-23-686 hangs a couple of times per week https://launchpad.net/bugs/49450 -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
