AppleTV won't download podcasts

Hi,

I have a first generation AppleTV.

For the last several months I have been unable to download podcasts on it - both audio and video. Also HD movie trailers don't play - this is isn't n issue for me as I don't watch them but I thought it might be connected.

Does anyone know why this might be? I have searched Google for solutions but I can't find any mention of this problem.

Thank you.