Originally posted by Neel
The message itself doesn't tell very much, but if you check the log-file (sysdata.xml) there should be further information there.
Does the computer restart after it freezes and when does this message appear?
The first thing that comes into my mind is the graphics-drivers. If you have a GeForce Ti 4x00, go to www.nvidia.com
and download the most current drivers. If you have a RadeOn card, go to www.ati.com
and download the drivers package, not the control panel. Or if you have an older GeForce card, uninstall the graphics-drivers from Device Manager (Control Panel -> System -> Hardware) and let windows install them by restarting the computer.