For the past week I’ve been having some issues with the Nvidia driver update. After updating to the latest driver Windows Vista kept prompting messages upon start-up to complete the driver installation no matter how many times you have done so whether UAC is turned on or not. This has been discussed at the official Nvidia forum but no fix has been addressed. So for now I just have to “complete” the driver installation every time I start up the computer.
There also seems to be some problems with the new driver even for Linux. I did a complete upgrade of my Ubuntu from 8.04 to 8.10 and the window title bar display goes funny. This article provides a temporary fix for the problem.