Hello, Recently my Air (2.13ghz Rev C) has been acting very strange, while I am using it the screen will sometimes randomly turn off (and music will stop playing in iTunes if playing) and then turn on again 2 or 3 seconds later. It doesn't happen all of the time, but it can happen in intervals 5 or 10 minutes apart. It is as if the machine is going to sleep randomly and then waking back up almost instantly? I have just done a full format and reinstall of Snow Leopard and it is still happening. Anyone had a similar issue or have any ideas? Thanks!