Re: VDPAU testing tool
I have managed to repro your VC-1 (WMV) issue; it is specific to a 64-bit OS.
I also reproduced the corruption decoding x264_lossless.avi. Given the 3D encoding means just two frames side-by-side, perhaps this clip should be supported. I'll investigate further.
For the 8600 crash issue, are you able to run a serial console or network console to try and capture any error messages?