Windows 7 x64 in classic mode! :) (Core2Duo 2.5 Ghz, 4 GB RAM) Although I have a 24" screen, the Aero taskbar and title bars just take up way too much space imho. :thumbsdown: I am also using the "classic" taskbar (no grouping, small icons) but I hate the classic start menu, the new one with the search box is superior in every way.