Problems with Visiontek X1300 AGP

Just got a new Visiontek x1300 AGP, works great for the most part but
if I left my desktop idle for about ten minutes the screen screws up,
gets blurred and I can't make out anything. Disabling the screen saver
helps, but a little while longer and it does the same thing. I do a
quick alt + f4 and enter to send it into sleep, and when it wakes the
video is fine.

Upgraded the drivers to the newest version, and now it doesn't do it
-as- often, but it still does. Any ideas? The only one I have is that
perhaps my nForce 2 motherboard is somehow conflicting with it...