http://www.nzone.com/object/nzone_downloads_rel70betadriver.html
Release Highlights * Added initial support for GLX_EXT_texture_from_pixmap. * Added new "Display Configuration" page in nvidia-settings. * Improved workstation OpenGL performance in Xinerama. * Added support for NVIDIA Quadro Plex. * Added support for Quad SLI. * Improved X driver error recovery. * Improved workstation overlay performance. * Added SMBus functionality to the Linux/i2c interface. * Fixed DFP scaling support. * Added support for OpenGL 2.1. * Added new "TwinViewXineramaInfoOrder" X configuration option to control the order of display devices when in TwinView.
Patch for disable SMBus (X11 sometime don't start) http://nvnews.net/vbulletin/attachment.php?attachmentid=20486&d=1158955681
*** This bug has been marked as a duplicate of 148670 ***