latest idea for wifi sync not working in itunes... I have spent countless hours trying to get wifi sync to work with itunes I have looked a t untold threads from untold web pages including official apple forums... to no avail... I have windows 7 ultimate 32 bit. was using avg free norton av ... nod and few other av products... here seemingly is what fixed the issue..i uninstalled the latest antivirus i was trying out and then ran a reg cleaner. installed Avast free (if this fix works i will purchase avast)I then went into "services" and found every single instance of any apple product and in the general tab i set ALL of these individual services ( several of them) to run as administrator ...all seems to work..i have rebooted several times shut off my modem and my router shut down and and restarted itunes. I am sure that running apple programs as administrator was the thing that fixed the issue and not so much the use of avast antivirus... to get into services click your start orb and type services in the search box and click enter... hope tis fix works as the greyed out "sync now" tab on my apple products was driving me nuts... I will now see if my appletv works with wifi all the time or if i have keep it wired to my modem as the wifi link kept getting lost since day one with that too.