[Libva] Crash/Exception/MemoryCorruption when decoding with libva

[Timo Rothenpieler]

This started yesterday, i suddenly wasn't able anymore to play my HD 
channels, as XBMC just keept crashing.
The crashlog always pointed into libva intel driver, most of the time 
into BeginPicture, asserting that there is no obj_surface.

First i thought it's caused by the staging version of libva i'm using, 
so i downgraded back to the latest release versions, but it's still the 
same.

I did not touch any software for weeks before this, and playing videos 
has allways worked fine, and yesterday it suddenly stopped working 
completely.
First I only wasn't able to play high-res h264 videos, and mpeg2 still 
worked fine. But now even SD mpeg2 causes all diffrent kinds of 
misbehaviour, most of them ending in a crash of the playing program, 
some even in a GPU hang.

Is there any chance this might be a software problem, or is my hardware 
screwed? And if so, which part is most likely the problem?