[mythtv-users] Error in fe log - XVideo-MotionCompensation missing on display :0.0

[covert covert]

I just put a 8600 into my mythtv box to get away from my ATI problems.
Trying to get XvMC working and I am getting this error in my FE log.

2008-07-09 15:27:14.088 VideoOutputXv Error: XvMC output requested,
but is not supported by display.
Xlib:  extension "XVideo-MotionCompensation" missing on display ":0.0".
Xlib:  extension "XVideo-MotionCompensation" missing on display ":0.0".
/usr/lib/libXvMC.so.1: undefined symbol: XvMCCreateContext
2008-07-09 15:27:14.097 VideoOutputXv: Desired video renderer
'xvmc-blit' not available.
                        codec 'MPEG2' makes
'xv-blit,xshm,opengl,xlib,' available, using 'xv-blit' instead.
2008-07-09 15:27:14.100 VideoOutputXv: XVideo Adaptor Name: 'NV17 Video Texture'


cat /var/log/Xorg.0.log | grep -F "Loading extension"
(II) Loading extension SHAPE
(II) Loading extension MIT-SUNDRY-NONSTANDARD
(II) Loading extension BIG-REQUESTS
(II) Loading extension SYNC
(II) Loading extension MIT-SCREEN-SAVER
(II) Loading extension XC-MISC
(II) Loading extension XFree86-VidModeExtension
(II) Loading extension XFree86-Misc
(II) Loading extension XFree86-DGA
(II) Loading extension DPMS
(II) Loading extension TOG-CUP
(II) Loading extension Extended-Visual-Information
(II) Loading extension XVideo
(II) Loading extension XVideo-MotionCompensation
(II) Loading extension X-Resource
(II) Loading extension DOUBLE-BUFFER
(II) Loading extension GLX
(II) Loading extension RECORD
(II) Loading extension XFree86-DRI
(II) Loading extension NV-GLX
(II) Loading extension NV-CONTROL

The extension is loading fine. How come I cannot use XvMC ?