Apologies if this is incredibly obvious, but I've just got my very first touch and I'm a bit confused. I assume, like the iPhone, that apps do not run in the background? So if I am in Mail or Safari, then exit by pressing the home button, these apps actually quit? I'm just trying to work out, therefore, what the point of the unread mail indicator on the Mail icon is for, because it can't check Mail in the background if I'm on the home screen. Or have I got that wrong?