I've 'subscribed' to several Podcasts in the stock podcasts app on Logitech Revue (Google TV 3.1). I can easily unsubscribe from any of them by clicking Unsubscribe in the details box...except for one. I accidentally added a web RSS feed that linked to a page of flash video rather than directly to downloadable podcasts, which it labels as a "Web Subscription," rather than as a "Video Podcast," (and represents with a globe icon instead of a folder icon), and the Unsubscribe button is ineffective. I can click subscribe and unsubscribe as I please, but the item remains in the list of subscribed podcasts. I also now see that my Video Podcasts have been added to a folder called 'TV Subscriptions' in my Google Reader account, but there's no sign of the mysterious "Web Subscription" item. UPDATE: SOLUTION: Delete the app's data. It also removed my podcast subscriptions temporarily, but they came back, minus the pesky web subscription.