I'm pretty impressed so far. It's really not that much different than Vista...or any other Windows OS since 95, but it does run very smoothly, and UAC notifications are gone for the most part. I didn't think I was going to like the new taskbar layout, but I think it's pretty great. I have noticed an issue where sometimes my laptop seems to lock up if I'm away for a while, closing the lid to put it to sleep makes it "come back to life," or just waiting a few minutes does too. I think this is a power setting issue, or possibly a BIOS problem, but other than that, it's been Jim Dandy since I got my upgrade disc installed a week or so ago. Any thoughts/annoyances? I also like how you can truly upgrade your Vista install, and still have all of your programs and whatnot just as they were before. I did a clean install for the best performance, but it's nice to have that as an option, especially for the casual user.