I have a machine here that resets itself every one hour (without my
intention, of course):
# cat /var/log/messages | grep "sith kernel: Linux version 2.6.18-128.1.16.el5"
Jul 14 22:29:41 sith kernel: Linux version 2.6.18-128.1.16.el5
(mockbuild@builder16.centos.org) (gcc version 4.1.2 20080704 (Red Hat
4.1.2-44)) #1 SMP Tue Jun 30 06:10:28 EDT 2009
Jul 14 23:30:09 sith kernel: Linux version 2.6.18-128.1.16.el5