I haven't read about this, but my new ipad was stuck at 100% battery for hours. I used it to about 90%, and then connected to my computer to transfer a few videos. It said "not charging", but after about 5 minutes I unplugged it and was surprised that it said 100%. A few hours later I was confused as it still said 100. I tried restarting, even with sleep+home and nothing. Finally it dropped to 99, but it has been there for another hour. Is this a common problem?