I just noticed that my ~2 yr unibody macbook pro adapter is starting to fray at the magnetic end. I have read a few reports of fires and burns and I am getting concerned. Apple tends not be very generous when it comes to repairs/refunds, but on the website they said you can bring your adapter in and possible get a new adapter. At this point there are no burn marks, just fraying. Has anyone had any luck getting a new adapter? Is it a waste of time to go to the apple store and try and get a replacement?