Thanks for the info!

However I don't appear to have been succesfull. I have followed the instructions you posted
however the glx module does not get loaded despite having load "glx" in the modules section, and dri and GLcore commented out.

From my /var/log/XFree86.0.log

(II) LoadModule: "glx"
(WW) Warning, couldn't open module glx
(II) UnloadModule: "glx"
(EE) Failed to load module "glx" (module does not exist, 0)


Any suggestions?

--
Brian