My Compaq 8710p laptop with a 256MB NVIDIA Quadro 320m was working fine. I switched to the proprietary driver and tried World of Warcraft under WINE until I got unbearable amounts of static. I restarted the computer and the static persisted. I have now moved back to the open source driver and there is now light static that is very annoying.
Picture of the static: http://imgur.com/CLqmI