I've used it on my machine with no problems. It's basically all the latest windows updates lumped together plus a few extras such as XP icons.
However, it didn't solve a USB problem I have. When I download pictures from my digital camera using the supplied software (Fuji), the computer sometimes hangs. However, if I ignore the supplied software and treat the camera as a storage device, and just copy the pictures to my hard disk I don't have any problems.