I don’t see it mentioned above, but Downloads is not automatically deleting podcast episodes as configured.
I configured mine to delete podcast episodes after a week, but the downloads have been sitting there for a month, undeleted. It also keeps on downloading new episodes, taking up more and more space.
I recently tried canceling the download, clearing the downloads, and setting it back up again, but weeks later see the same problem with not deleting podcast downloads as configured.
I wonder if this is a podcast only bug that hasn’t been noticed.