I've got my MBP C2D for 7 weeks. Battery capacity used to be at 5500+. Since a day or so it is dropping, and the battery won't charge beyond 96%, see picture. Calibrating didn't help, charging overnight also didn't change anything. I understand that the capacity of a rechargeable battery drops when used. But it seems to me the battery capacity is going down rather quick, too quick if you ask me. Any ideas on what to do?