I'm trying to track down this playback issue some people are having, and I need more data (I can't reproduce it on my or my wife's blackberry).
If you're having issues playing back some/all podcasts, can you grab a copy of 1.5.9 or later and post a response to this answering these questions?
1) Does it happen on all podcasts/episodes?
2) Does the progress bar move at all while it's trying to play?
3) Does the file play in the blackberry media player? (There's now a menu item in the playback screen [the one with the playback buttons] to launch it in the BB media player)
4) What model and OS are you on?
5) Why? Why are you doing this to me?

6) Attempt to play a file that doesn't work, let it not play for 10-15 seconds, then pause it. Then send the logs to me.
7) If you have a few minutes to spare, and want to try some stuff with me, you can reach me as h00zle on AIM (those are zeros)
Follow these steps to send the logs:
From the main screen, hit the menu and choose 'View Downloads'
From this screen, hit the menu and choose 'Send logs'
From this screen hit the menu and choose 'Send'
Hopefully if I get enough data here I'll be able to see a pattern, and maybe fix it. Sorry to run you through this, but I can't think of another way to figure out what's going on.
-Marcus