I know that the Video-Driver may be responsible, but the same driver works quite well under 3D-Max and at least three other Open-GL applications. In my case, the reboot happens when the system really gets slowed down by Vue. When I try to close a window to get Vue faster (mostly shader-windows) most of the time, this works quite well. Sometimes however, the computer simply reboots. As for the system: Win2K is quite stable if used and maintained correctly. I never experienced sudden reboots or BODs before. Like I said: Sometimes an application will crash, because the programmers goofed up or didn't put much work in a programm converted from MAC-Base. But reboots and the like are something that I never experienced before. Joerg