Xlib: extension "GLX" missing on display ":0.0".

[Senectus .]

I have just installed a new game under Cedega and was about 60 seconds
into playing it when the whole desktop (KDE) restarted..
Not sure what cause it I got back into KDE then tried the game again
and now it won't work.. whats worse is that NO 3d stuff now works..
If I try to start glxgears I get this:
Xlib:  extension "GLX" missing on display ":0.0".
glxgears: Error: couldn't get an RGB, Double-buffered visual.

I've found a few things in the forum related to this error but those
problems were in 4.10 and besides they've been fixed.
Any idea's on why I'm seeing this in Hoary now?
The graphics card is an NV31  GeForce FX 5600 and yes the nvidia
drivers are loading..

-- 
Ubuntu Hoary 5.04 
"The thing Ubuntu means to me is, I'm glad I didn't get a Debian
Tattoo..." - Matthew Lambie