One thing I've just noticed is that the frame rate disclosed by glxgears
is extremely slow.

glxgears
79 frames in 5.1 seconds = 15.565 FPS
86 frames in 5.0 seconds = 17.183 FPS
69 frames in 5.0 seconds = 13.754 FPS
101 frames in 5.0 seconds = 20.171 FPS
102 frames in 5.0 seconds = 20.217 FPS
102 frames in 5.0 seconds = 20.255 FPS

In the past using earlier versions of ubuntu with the older driver, I've had 
much better frame rates, admittedly not in the 1,000's of FPS (it is an 8 year 
old graphics card), but (from memory) in the region of 750+FPS 
.
I've attached xorg.0.log in the hope that somebody can suggest a solution to 
improve the FPS.

Thanks in advance

** Attachment added: "Xorg.0.log"
   http://launchpadlibrarian.net/19346432/Xorg.0.log

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[Intrepid] nvidia_drv.so: undefined symbol: AllocateScreenPrivateIndex
https://bugs.launchpad.net/bugs/251107
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