Itunes shouldnt become unresponsive, however, a first sync can take a long time. Just leave it to do its thing - its been reported that syncing and backup's can take about 30/40 mins. Also, are you running the latest 3.0 firmware? If not, you need the lateset version of Itunes, then you need to plug in you Iphone and check for updates and update to 3.0. This will not work unless you have the latest iTunes, so do this first!
|