ok, this buzzing issue has been going around for a while now, My macbook SR was buzzing so I took it back and the new one does it too. what I was hoping to hear from someone is a positive experience with exchanging a macbook SR. It there anyone out there that had this buzzing problem and was able to get it exchanged from one without any buzzing? I am still debating on taking it back and exchanging or getting a refund and paying the restocking fee..... Some people say "keep trying to exchange" but you can really only do that so many times until they say "no more exchanges mr. perfectionist!!!!"