5th generation 160gb running snow leopard and latest itunes freezes during sync. Have deleted and reinstalled itunes as well as restored ipod a few times. Gets as far as determining tracks to sync and then locks up. It never used to do this until the latest version of itunes. I don't have any previous itunes itl's stored so I would have to start over if I was over to downgrade to a previous version. I'll save that as a last resort if anyone has a fix?