Nvidia has released a new driver set for all nForce 1/2/3 based boards, version 3.13. This new set has updated drivers for everything (audio, usb, lan, ide, video, etc). These have only been out 1 day, but so far general feedback is that they are an improvement over the 2.45s. A few people have had problems with certain CD drive related software though, which is typical with 3rd party IDE drivers. (Often, updating or reinstalling the application fixes these issues.)
My recommendation would be that Windows XP users set a restore point and Windows 2000 users have good backups of anything important before updating. This driver set includes an accelerated IDE driver, which always has the potential to cause issues.
nVidia recommends uninstalling the old set before installing this set. You will probably have to reboot several times after doing so.