So I'm charging my iBook, the battery indicator says 85%, and all of a sudden, the LED starts changing color! It went from amber to green to RED (I didn't even think this was possible!), to amber, then red again, then green, and then finally back to amber. Is my power adaptor dying? Is a short circuit happening? The last time the light wasn't working (actually b/c it wasn't getting any power, that was an iBook rev. A, here it's a Dual USB), the cord was fraying, and sparks were flying and frying the plastic. Feedback ASAP would be much appreciated.