I ran 3DMark2001 for the XP drivers, and compared to the 30.30's, the scores were the same! What could have Nvidia been doing for 52 different versions of drivers?! I'd really like to see a changelog for their drivers.

They could just be bug fixes, or even small updates to opengl or 2d graphics. 0.52 version changes isnt that much, if it was a change in the 1.00's you could expect some sort of big difference.