Hi there, just bought a second hand Ipod touch Ist Gneration 16gb off Ebay. It is in brand new condition, however the touch screen is playing up. The seller said the touchscreen was getting a bit slow, however the touch screen becomes completely unresponsive after about half a min and you have to rub the top of the screen to get it going again. The the problem occurs again after about a minute of use the screen stops working again. Is there any solutions to this? Anyone have similar problem? Or do I have to take it to the Apple Store.