Ok I've been reading thru all the threads and some are wishy washing regarding the issue. I've noticed in a quiet setting with my magsafe plugged in I hear a faint buzzing noise for a little bit then it goes away. When it starts again I'll unplug it and it goes away so its def the charger doing something. My question is that my one year warranty ends on the 24th of this month. The closest apple store is an hour away. Can I just go to the store and ask for a new magsafe??? Or is this a non issue??? Also do I have to take my macbook or can I just take my charger only. Thanks so much.