I have a Ubuntu machine which randomly reboots itself:last rebootreboot   system boot  2.6.32-042stab12 Sat Mar 25 23:48 - 12:42  (11:53)reboot   system boot  2.6.32-042stab12 Wed Mar 22 18:28 - 12:42 (3+17:14)reboot   system boot  2.6.32-042stab12 Sat Mar 18 05:10 - 12:42 (8+06:32)reboot   system boot  2.6.32-042stab12 Thu Mar 16 13:52 - 12:42 (9+21:49)reboot   system boot  2.6.32-042stab12 Thu Mar 16 09:50 - 13:52  (04:02)I am trying to figure out why and stop it. I pasted the logs to pastebin here.I am not doing these reboots. Also, it seems like there is nothing going on (like a crash, etc.) which would cause the server to reboot.
Ubuntu machine randomly reboots
ubuntu;reboot