Win7 correctly found the driver for printing on our HP Photosmart 2575, but I couldn’t scan from it. So I had to install the (usually flaky) HP drivers; long story short, they didn’t install correctly. So I had to use System Restore to get rid of the clutter. After a quick reboot, Win7 was back to normal. I had to reinstall my ATI Remote and MediaMonkey, but that didn’t take long.
The more I use it, the more I’m excited about Windows 7. Now if they just don’t mess it up between now and RTM. 😉