NVIDIA has released a new version of their unified Linux drivers. Version 1.0-2960 changes include:
*Fixed problem with loading the GLX extension in multi-head environments with non-NVIDIA video cards.
*Significant performance improvements in Viewperf on Quadro parts.
*Added option "NoRenderExtension" to disable the RENDER extension. This is useful in 8bpp where the RENDER extension will preallocate a large portion of the default colormap and break many legacy applications.
*Fixed a regression where I420 XvImages had the chroma planes swapped.
*Fixed some problems with moving overlay windows.
*Added a dynamic XvMC library "libXvMCNVIDIA_dynamic.so" so that applications can dynamically load the vendor-specific core XvMC support.
*Added XvMC motion-compensation acceleration for NV25 and fixed some bugs in the NV17 XvMC support.
*Fixed some problems with FSAA modes failing.
The drivers can be found in their usual place
http://www.nvidia.com/view.asp?PAGE=linux