Suddenly I'm not able to charge my iPad battery...at all! I've tried it plugged into outlets, and also through the keyboard/docking station...nothing! I'm now down to 17% power and very nervous! I've done a lot of Googling on this but most problems seem to talk about the USB charging...not much to be found on outlet charging problems. Anyone have any suggestions?? I've tried it in sleep mode, while it's on, and when it's completely shut down...nothing!