When I was trying the beta ios versions, wifi sync worked fine most of the time occasionally losing pairing status and have to plug it back in to get the codes then Wifi sync would continue to work. I am now IOS 5 and itunes 10.5 official releases and when I sync my ipod to my computer and I choose the option to sync over wifi, when I disconnect the iPod it disappears from iTunes completely and I don't have the option on the iPod to sync now, even when connected to power. I have already tried unchecking wifi sync and hit apply and then re-apply wifi sync but that did me nothing. I read another thread about restarting the apple mobile service. I restarted it and the same problem persists. I am not able to use Wifi sync at all now so how do I fix it? Thanks.