I have a 2win2k server, dual xeon, 2gig ram, raid 5 hot swappable server. It is a domain controller that works hand in hand with a sql server and a app server. It has recently been freezing out of the blue. No event log errors, no log errors of any sort. All of a sudden the mouse, and keyboard and screen are completely frozen. I restart and everything is fine. I have made sure the room is cool and the case is getting airflow - other than that I am not sure what else to look at?