Last week NVIDIA had released their first 256.xx series Linux driver
in the form of the 256.25 Beta release, but as we discovered, it boasted some major performance regressions
for a NVIDIA GeForce GTS 250M and other mobile ASICs. This issue has now been resolved thanks to a new beta release.
The NVIDIA 256.29 Beta driver has been released and its only official change is "Fixed a bug which prevented use of high performance PowerMizer levels on systems with certain ACPI configurations."
The NVIDIA 256.29 Linux Beta driver can be downloaded at NvNews.net