i got my macbook (sn w8610) in march. i had NO issues that other people talked about. the whine, the hum, the flicker at the bottom of the screen, airport problems. nada. in the last few days though, the airport won't pick up my trusted networks without me turning airport on and off twice. i get random restarts, and had a kernal panic. and for some reason right now spotlight won't work. at all. what should i do?