I can always hear my fan running on my new macbook. It isnt that loud, in fact it is pretty quite most of the time. The thing is that my old Black MB didnt really make any sound from the fan until I started to really push the computer (watching videos online and running some pretty intensive apps) and now with my new macbook i can hear the fan when im in a quite room. Ive been doing some searching here on the forums and i cant really find a straight answer on this subject. To make things worse i went to best buy today and i really couldnt hear anything out of the macbooks on display, yet it is pretty noisy in the store and that could have drowned out the faint sound of the fan. Your help is really appreciated. Thanks guys.