I have some DELL optiplex 755s, that freeze after high priority windows updates run. They are running windows XP SP3. This has been the case for these PCs for a while now, and I have left auto updates turned off. Does anyone know if there is a known issue with these systems. I saw online a problem with ATI video drivers/catalyst control center, which I have, and windows udpates, but I am not sure if this is the issue or not.