Movie playback (PureVideo, nStantmedia for instance) is effected by the Multi-GPU-Performancemode setting in the control panel. if set to "single GPU", movie playback is fine.. when you select "automatic selection", you'll get half an image, top or bottom half is scrambled. does this happen with single gpu users too? I just installed my brand spanking new POV 7950GX2 btw. It works flawlessly on my Asus A8N SLI-SE (bios revision 0502) mainboard eventhough it isn't mentioned on the www.nvidia.com/gx2 page.