I have set up an ad hoc network for my apple tv. I am having trouble with renting movies. I can not rent a movie that is 1g or larger. I have a good internet speed. I can rent smaller shows but when I try to get a movie, it has the general error message. Is the ad hoc network able to send this much info, or is there another problem that could be happening. Also I can not rent on Itunes. I get an error message 500 which states rgnTooBigErr Bitmap would convert into a region greater than 64 KB. Is this maybe a permission problem. That is what Itunes support keeps telling me but there fix does not work. This has me really confused. If you have any suggestions please help.