64 bit client dynamic lighting problems

[clint at magicalspirits.net]

I was playing some vehicle invasion last night and noticed that the 
headlights from the scorpion are ragingly bright on some surfaces and 
entirely non-existent on others. It odd enough that I switched over to 
windows just to see if it was the map. In windows the lighting looked 
normal.

I'm running with the NVIDIA-Linux-x86_64-1.0-6629. I'm running in 
1280x1024 with all the effects turned up as high as they'll go. 

Also I noticed that in the shadows drop down list I only have access to 
None or Blob. Is this a limitation or bug?

Also another oddity was that I get higher frame rates at 1280x1024 than at 
the next couple of resolutions down.

Clint