i am having a problem syncing a 3gs. never had trouble with my original iphone. basically, itunes hangs every time i try to sync and locks up my machine entirely. can't force quit, nothing. i have done the following: restored phone, several times uninstalled and reinstalled itunes removed itunes purchases from items to sync deauthorized and reauthorized computer i am able to get a successful sync if i do not attempt to sync anything from itunes or iphoto. so i have a functional phone with contacts. the problem seems to be with itunes as i can no longer sync the previous phone either. can anyone help? apple doesn't have any solution for me.