xorg 6.9 + via direct rendering

[Jeremy Wilkins <jeb@jeremywilkins.freeserve.co.uk>]

Hi,

I've got a sarge install with xorg 6.9 from your backports archive. For 
some reason Direct Rendering is failing, if I run glxinfo with 
LIBGL_DEBUG=verbose then I find its complaining about different ddx versions

   Unichrome DRI driver expected DDX version 4.0.x but got version 5.0.0

Any idea's on how to solve this?

Thanks

jebw