Re: VDPAU 9400GT MPEG2 artifacts
Hmm. I can't see an issue with that clip on my system. On that clip, do you always see a problem, and is it always in the same place? Do you only see the issue in MythTV, or other applications (e.g. MPlayer)
Do you know which GPU your mother's 8400GS contains?
However, if *all* clips do this, it sounds more like there's a problem with your specific card; maybe it got overheated, or got zapped by static or something like that?