Hi everyone, I just did the upgrade and Mavericks seems to be a huge improve! But still, I have some questions. 1. Does the new multi display mode consume more power? Because when I connect to my 1080P display in the new mode, I find my MBA are slightly hotter in the keyboard area. 2. Can I switch between the new multi display mode and the old? I find impossible to use keynote to play on the 2nd display. When I try to do so, the 2nd display just goes black for a sec and back on displaying its own desktop instead of the Keynote page. 3. Is the three finger tap for looking up in dictionary working for you? Now when I three finger tap on words, nothing happens. That's all I want to know at the moment, thanks!