I have had the buffering problem on a couple different occasions now. I had my ATV2 set up on my 5GHz N wireless network on my AEBS. I've never had any network problems before. Since the ATV is only about a foot from the router, i went ahead and plugged in a cable and the stuttering stopped immediately. I guess some tweaking is in order, because i would really like to be able to use wifi in case i move the router.