[plug] Error running ut

[Richard]

> You have:
> <snip>
> Section "Module"
>   Load  "GLcore"
>   Load  "glx"
> </snip>
>
> In your /etc/X11/XF86Config-4 ???

These lines were not there so I added them, but now x will not start with the 
resultant error..

(EE) Failed to load module GLcore (module does not exist, 0)
(II) [GLX]: Calling GlxExtensionInit

...only the problem machine has the Nvidea drivers on it.

>Are the kernel module (NVdriver) and XFree module (nvidia_drv.o) both
>installed in the correct places? 

What are the correct places?