Firstly, let me say that I have booked on an Apple Store 1 hour iPad introductory course in a fortnight or so, so I'll refrain from asking too many questions until I've been on that as it will no doubt answer many embarrassing Newbie questions. There is, however, one thing that puzzles and irritates me in equal measure - tapping the screen. Well, probably tending more toward the irritating end of that balance! It seems that sometimes I merely have to think about tapping an app, or somewhere else on the screen that is "active", and the action is executed - sometimes catching me by surprise when i accidentally brush the screen when moving my hand across to the intended target. And yet on other occasions, in order to get any response whatsoever, I have to thump the glass so hard that my finger joints buckle, the fillings in my teeth rattle and passers-by dive for cover as they think a pistol has been fired. And even then, nothing happens! It can't be because too many apps are open, as I close them whenever I have finished something and, in any event, it sometimes happens when only one app is open - not always the same one, either. Is it me? Is it the iPad? Is it perhaps not an iOS bug, but an "undocumented feature" (as i used to claim when my COBOL did something spectacularly unexpected!)? It really is frustrating and, in the limited time I've had the Gizmo (UK Launch day + 1), I have been unable to work out any common factor, action, app or anything else which might explain it. Any advice, except perhaps to visit my dentist and get my fillings secured with titanium bolts? Thanks.