I emailed the IT guys, as I've been getting a few emails describing something similar to this. Here's their response:
From time to time people lose their 'cookie' with the site, Itunes can not recognize the podcast URL without being signed into the website, this is usually stored in your 'cookies' in your browser. If you delete the cookie, or you haven't been on the site in awhile, this could stop podcasting. They also expire after a certain amount of time.
To correct this problem,
Go to our website, sign out if you are already signed in, clear your browser's cache AND cookies, then sign in again.
Wait about 10-15 minutes, open ITUNES, and right-click on the podcast and select update, this should solve your problem.
In the future if you notice you are not getting podcasts please refer to this method and it should correct it.
Hope this helps. If it doesn't, email me at <!-- e --><a href="mailto
[email protected]">
[email protected]</a><!-- e -->.
-steve