I'm finding that I already miss Leopard and am considering going back maybe until allot more apps have been updated. If you are a heavy 3rd party utility apps user, there are a great deal of incompatible apps that simply won't work on this yet. Also, it seems that there are some subtle differences in the way finder behaves that quite frankly I don't like at all. For one, now when you right click in a finder window, it outlines the folder or file you happen to be near and you can not just right click paste into the main area of the finder window unless you have empty space at the bottom of the window. I see no purpose in this new "outline" highlight in lieu of the regular highlight. It gets in the way. Also where did the extended "more" on the right click menu go? Gone. Anyway I had gotten so used to using 3rd party apps like, Smartscroll, Sticky Windows, Leopard Cache Cleaner, WinshadeX, and on and on and most just no longer work. I suppose that is to be expected as an early adopter, but in addition I see a lot of app crashes for no reason, Firefox, vlc, etc., and it seems to take longer to shut down now. I guess I'll get used to it and apps will be updated etc, but I'm not really sold on it as a worthwhile upgrade. I predict power users are in for some extended period of "issues".