chrishajer, I have no idea if RSS change between things, but y’know, it’s habit. I don’t like to spend time debugging something that’s doesn’t mesh. There are a lot of possibilities to miss-match.
And pulk, either you have bbpress 0.9.x or you have bbpress 1.0-alpha-x. The plugin is not the same as using bbPress core 1.0-alpha. In your bb-config.php, what is your BBDB_CHARSET defined as?