After I removed the .podracer/tempsub and podracer started running again I found two instances of an error message that read: podracer internal error (0) I bailed out of podracer once that had happened. The lst thing in .podracer/podcast.log was a new podcast I had subscribed to and one of its enclosures had been downloaded. Might this kind of error happen if the xml file downloaded from the podcast has some formatting problems?
