Re: mplayer vdpau
Possibly. I had poor luck with Debian's gcc-4.3.2 when I experimented with mplayer/vdpau on my system at home yesterday. I found gcc-3.4.6 worked better. I'm told that gcc-4.3.2 has worked well for others, though. Note that mplayer/vdpau are still early development versions, so it's possible that the error you're seeing is a bug/limitation.