Is this a common issue? I have an app on my phone that has an update waiting, but it only shows up in iTunes, and not in the App Store app on the phone itself. I've just noticed, after checking, that it was not the only app to exhibit this behaviour, and there may be as many as three (one of the apps doesn't reveal its version number so it's hard to tell). I recall having noticed this problem back in the days of my 3GS, but had forgotten about it until now. Am I alone in experiencing this behaviour?