Everything I run is 64-bit, so I don't have any way to test this yet.. However, thank you on behalf of those whom it IS working for, and I look forward to hearing about patch progression into 64-bit. Can you comment more on the source of the problem. It's VERY odd that it affected ONLY MPEG2 and even affected the PCI-E card when the motherboard video was disabled in the bios?
(of course, this comes right after I tore apart the machine in question, removing the 9600GSO, and running only on the motherboard video, and changing all the config back to CPU++)