This weekend, we migrated our stat tracking to a new site.  While this does not affect you the end user in regards to our feed or anything like that, it may reset the download flag on the podcast.  I had this issue come up this morning as I ended up re-downloading all of our podcasts in iTunes.  Just a heads up if you have not been hit by the issue yet, and an apology for not realizing this ahead of schedule.  But this should be the last hiccup of this nature for awhile.