Started having problems with apple tv 2 authorization is required when trying to play movies on my mac via home sharing. Tells me to go into itunes and authorize it to play movies. I did this and have 2 out of my 5 devices authorized to play. It works when I go into itunes on my mac and play the movie then switch it to the apple tv. I get the erro message when I access my mac on apple tv under computers and try to play a movie.