Obligatory warning: This script has been designated as an obsoleted "Retro Script". There is no guarantee that it will function as described with modern versions of iTunes and OS X. If used in its current form it may not work at all without modification and, at worst, it may corrupt or destroy data.
iTunes will stop updating a podcast if you have not listened to at least one of its episodes in five days. This script will batch-update every podcast subscription so you don't have to manually update each one individually.
I have posted instructions on how to create a launchd agent to run this script automatically and invisibly in the background to ensure that your Podcasts are always updated.
Possible iTunes bug (July 17, 2014): Looks like the iTunes AppleScript command updatePodcast command is broken as of iTunes 11.
downloaded 12m 4s ago
Check scripts downloaded to your computer from dougscripts.com for latest version
downloaded 57m 24s ago
Applet assists with swapping, copying, appending data between track tags
downloaded 58m 20s ago
Export artwork of selected tracks to parent or specified folder
downloaded 1h 1m 11s ago
Displays files in iTunes Media folder not in iTunes track library
downloaded 1h 1m 24s ago
Re-associate batch of dead tracks with files from selected folder
downloaded 1h 3m 11s ago
Make a text file listing Albums that have some/no tracks with artwork