[CentOS] My server reboots every hour! Help please!

Wed Jul 15 12:57:36 UTC 2009
John Doe <jdmls at yahoo.com>

From: Marko Vojinovic <vvmarko at gmail.com>
> I should also note that resets are abrupt, the system doesn't seem to
> go through shutdown phase.
> Thanks for the suggestion, though!

Anything in the system logs (bios/ipmi)?
Some kind of watchdog?