Took maybe 5 or more attempts to get my first successful sync. I would get so far, and then I would get iTunes error messages saying that the disk wasn't responding on the touch, or that the device was disconnected. I tried a few thing in iTunes but eventually just ejecting and reconnecting it would make progress again. Probably took the better part of an hour, syncing around 14GB of data total. Later syncs are much faster, haven't really compared to my 3G ipod which doesn't get sync'd very often at all. There is a lot more to sync here, video, photos, contacts (doesn't actually work as far as I can see with yahoo).