I've had my 11" ultimate air now for a few days and apart from realizing that it is the best laptop I've ever owned... I have noticed that the fan has been completely silent for every moment of use. Even when playing games, I couldn't even hear it. (then again I was in my apartment which is not 1000% soundproof) Regarding heat, it gets "warm" when playing games like starcraft II, but that was to be expected. It never got scary hot or anything though. I noticed some forum members had a CPU temp monitor in their menu bar. How do I get this in my menu bar? I couldn't figure out which software they were using. p.s. bootcamp assistant will now make a bootable usb for you (provided that you have a windows 7 iso) This was a nice realization for me.