Here we go again. Yet another release by nVidia, the third WHQL this year. As far as Windows 7 is concerned, this release is good for everything 6 series and above.
After install, the screen is jittery until the system is rebooted, after which it all settles down nicely. This version appears to have fixed the occasional cursor twitch which was apparent in 197.31.
As releases go, this one seems to be fairly harmless, and I would suggest that it is given a try at least..