Thanks for the tip. I tried what you said, (after reinstalling for a second time) and for whatever reason, the problem seems to be gone. I think the problem was a corrupt library file or something like that because the first time I reinstalled, the refreshed installation still had all my podcast subscriptions. The second time I reinstalled, those subscriptions were gone, and so was my problem.
Anyways, for what it's worth, I did get these error message in terminal:
(rhythmbox:2425): GnomeUI-WARNING **: While connecting to session manager:
Authentication Rejected, reason : None of the authentication protocols specified are supported and host-based authentication failed.
(rhythmbox:2425): Rhythmbox-WARNING **: couldn't connect to session bus: No repl y within specified time
But, I'm guessing that these messages are here simply b/c rhythmbox doesn't have a text interface. Please let me know if there's more to it than that.
In the mean time, all seems well, so thanks again,