hi all, Sometimes after a while the touch screen becomes unresponsive ?? Like for example when you slide from the top to close an app I cannot do or sometimes playing a game you have dead areas like a puzzle for example and I cannot swap pieces...to be honest it is from games I notice when it gets hot this happens... Also sometimes if I leave it whilst it locked the screen will sometimes slide up a little by itself!! Or on occasions (rarely) things open by themselves I read the news today on the modern ui and the screen shoke a few times Have I got a ghost?? Lol ... I calibrate the screen again no difference any ideas? All the above doesn't happen often and it happens random Also I have tune up utilities installed to save power could that contribute??