I've tried updating, reinstalling, factory reset, format, using a program 'anyfix' that claimed to assist in such problems, tried looking it up, can't find the same problem listed anywhere--- no luck. Itunes instantaeously tells me that the sync is complete as soon as I press the button but of course it isn't, not with the thousands of files I'm trying to transfer. Never had this problem over the years with an ipod/itunes. What do you think it means?