re the iPhone App "waiting" and not doing anything else
I simply resumed downloading the app that was loading. I had to "guess" at which app got stuck, based on the ones that were loaded and the one that was missing. I then went to the app store (on the iPhone, not on the PC) and then started the download/install process for the app I thought did not download correctly. Sure enough that fixed the problem.
I have no idea, however, how to figure out which app is causing the problem. I simply guessed and got it right.