For the past few days I, too, have had trouble with my podcast subscriptions. Without fail, I get the message "Microsoft Zune has stopped working" - sometimes after minute, sometimes after a few minutes.
Hoping to locate the problem, I've unsubscribed to all podcasts. I'm using Buzz Out Loud as my one test podcast and have found a repeatable error. The Zune software begins downloading a podcast episode and churns along until it gets to 99%. Instead of completing the download and having it available for syncing, the following error message pops up:
"Microsoft Zune has stopped working".
For kicks, I installed the Zune software on my daughter's PC and tried to download a podcast episode. The exact same error message appeared. We're both running Vista Home Premium.
Seems like it's a software issue. The Zune software says it's version 2.5.447.0.
Any ideas?
[9/4 edit] And of course for no reason whatsoever, my Zune software now downloads podcasts just fine. The only noticeable change was the installation of Adobe Premier Elements. Doubt that had anything to do with it, but you never know. All 50+ podcasts are back in the queue. Go figure.