2009-03-13 11:52:32 UTC
Under File | Preferences | General, uncheck "Run a check for new podcasts when the application is started." I have "Catchup skips older episides immediately" checked, but I'm not sure that's necessary since I never use Catchup. In the Subscriptions window, uncheck the podcasts you want to delete. Then delete them from the hard drive. When you click "Check for new podcasts", the ones that are not checked should be ignored.
It's been a while since I have done a lot of experimenting with Juice as I have been dragged into iTunes. Unfortunately, development of Juice is dead. Its developers are MIA. It's sad because it's a great little program. With enough experimentation, you can get iTunes to do what you want after you get used to the idiot interface.