He have 64MB NVIDIA Quadro4 200NVS cards in our desktops for having dual monitors. They seemed to work fine at first but with nview enabled occasionally WindowsXP will completely crash. Each program that is open at the time will one by one go un responding and the only thing you can really do is a hard reboot. The mouse also comes completely unstable so that if you move it an inch on the screen it goes all over the place. I think that by disabling nview desktop managment the problem wont happen anymore. But, i dont really want to disable it. The drivers we are using are 77.18. Any help would be great. Thanks