Sometimes when I use my MBA the fan starts noticeably acting up (louder, upper left area of keyboard starts getting hotter, etc.), but it's never a regular/constant occurrence. For example, I'll be watching netflix for like 4 hours one day, and everything's fine. I go to sleep, wake up the next day, during the first 5 minutes of watching netflix it starts acting up. I usually just end up restarting my MBA and the problem goes away until the next time it returns. It also happens sometimes when I'm downloading a torrent (somedays I'll be downloading 5 and it's fine, others I'm downloading 1 small file and the fan starts getting louder/MBA getting hotter), or when I'm using a media player to watch something. Is this normal behavior? I tried searching but couldn't tell if it is normal, or if mine's just problematic. I used to only use my air for studying/note taking, but now that I sold my desktop I wanted to use it as a main. I bought a mini to use as my main because of this situation, but now I kind of want to return the mini and get a TBD display to use with my air. Thanks!