Yes, it was a regression introduced in 1166 and will be fixed in 1171.
Thank you again.

If it helps, this duplication behaviour happened in 1166 as well, but not earlier versions. I think any edit would trigger the duplication, and for me it would show up if the podcast node was collapsed then expanded.

Thank you. We are looking into it.

Here's an interesting bug:[list]
[*]Subscribe to a podcast, and change the "when new episodes are available" to "do nothing" (of course, make sure that customize rules checkbox is checked). Make sure you do all of this, all at once (via the "subscribe to new podcast" -- do not edit the podcast subscription yet). Click on "OK".

[*]Change your mind, and edit the podcast subscription (right click on the podcast name), and try changing the "when new episodes are available" to something else, like "download the most recent 5". Click on "OK".[/list]
If you re-edit the subscription, you'll see that the subscription hasn't changed from "do nothing". Even more interesting, if you quit and restart mediamonkey, the podcast subscription is duplicated -- in fact, you get a new duplicate subscription every time you try to edit the podcast, but you won't see the duplicates until you restart mediamonkey.