Hello...I am looking to buy a 16GB Wifi iPad from a buyer and they are reluctant to sell me the device due to an issue she is having. Here is what she said: "When I go to play my videos it plays for a little bit but lags really bad and then just shuts off." She means the whole iPad shuts off, and the video she is referring to is those she uploads to the device, not necessarily streaming/Youtube. I can't seem to find any information about this problem online. Does anyone have a clue what's going on?