Just a word of advice - the app that seems to have been the culprit in my 11-restore spree was "the WISDOM English-Japanese Dictionary" (
link) which also happened to be my most expensive (and useful) purchase. Figures. Anyway I went through and re-installed all of my apps one by one, alternating between installing directly to the iPhone and installing via iTunes - they all worked perfectly, except for that one. Once it was installed, I was unable to install anything else using the App Store on my iPhone (and narrowly dodged my twelfth restore by quickly removing it after a near-freeze) ...