So my old macbook charger is frayed on the end, and has been for some time, and all of a sudden, I plugged it in and it started sparking! Has this happened to anyone before? If so, is there any way you can return it to apple for a replacement? I have an old white plastic macbook from 2008, so I'm not sure if there's anything they can do for me, but if someone else could share their experience, I would love to hear it. Thanks guys.