Currently Being ModeratedFeb 8, 2012 7:56 AM (in response to Wobble Woo)
I had similar issues, it would not quit, my syncing of iOS devices would hang just before new apps would be installed. The official 10.7.3 update was/is causing problems. I followed the instructions to download the combo 10.7.3 updater, then boot in safe mode (hold shift down) and install the combo. I also turned off genus which seemed to be part of problem. And now my itunes works find, weirdness with 10.7.3 gone, and I can sync my iOS devices with no problems.
Currently Being ModeratedFeb 9, 2012 8:57 AM (in response to Wobble Woo)
I finally backed off 10.7.3 back to 10.7.2. Itunes still was misbehaving though like this and I started getting your stuff is not authorized when syncing iOS devices this morning. I think there are probably several things going on from what i read. I was not having problem with 10.5.3 before the 10.7.3 update however. Not sure how all figures in but it did. But as day has gone on I look back at my Pro via screen sharing and the syncing of one iPad sitting there wirelessly now works fine (after initial attempt with errors, authorization issues and such) so it seems to be smoothing out but time will tell. I think I am going to wait to see how this all pans out before I attempt 10.7.3 again. Maybe a fix on it and a 10.5.4 itunes fix may help once apple figures out issues people are having?