First off, if this is in the wrong place, please feel free to move it to the right place. I have an iPad 3 64g 4g. When I plug it into any computer, I get "not charging". When I plug it into the wall, the brick in the wall and the usb plug in the brick heat up to concerning temperatures. First, why won't it charge through the computer? Second, why is it heating up so bad when connected to the wall?