From the comments:
I am having trouble downloading your podcasts from itunes. What happens is that it starts to download, everything looks like it is going normally (i download lots of podcasts nearly daily) and it stops donwloading shortly after beginning-sometimes 25 seconds into it, sometimes a bit longer, but never the entire post. I was wondering if anyone else was having this problem with your itunes link-this hasn't happened for me with any other podcasts i download from itunes..."
I have no idea what is causing this. Any ideas out there?