I've recently got an ipod touch, and have been downloading podcasts to it. They played OK at first, but now when I try to play them they seem to be running slowly, and are slightly distorted.

Also when I click the "get more episodes" button, from the ipod, and download more, I get a "can't play this movie" message, and I'm sure they're audio podcasts.

Any help with these problems would be appreciated. Thanks.