On Wed, 8 Sep 2004 20:49:15 -0500 (CDT), David L. Crow <crow@xxxxxxxxxxxxxxx> wrote: > I woke up this morning and my machine was frozen and I had to perform a > poweroff to reset it. > > The following information was in my syslog: > > Sep 8 04:05:19 waterloo kernel: ------------[ cut here ]------------ > Sep 8 04:05:19 waterloo kernel: kernel BUG at kernel/exit.c:855! > Sep 8 04:05:19 waterloo kernel: invalid operand: 0000 [#1] It could be a hardware problem, you might want to try running memtest86, for example.