Since upgrading to 1.9.0, there have been a considerable number of cases when after a podcast episode is finished, it throws a java error (sorry, can't reproduce it from memory) and says something to the effect of "Podtrapper will need to be restarted".
Unfortunately, I keep forgetting to send the logs, so this might not be of any help until the logs are sent. I've finished off all my new episodes for the day, but next time the error is thrown I'll be sure to email you the logs.
Just a heads up, so you're aware of the problem when you get my email.