When I started Trains of Thought, I set it up on a test server at home. It was designed using WordPress 1.50 and the theme Jakarta by Jose Mulia. I decided to take the site live the same day that WordPress 1.5.1 was released.
Instead of taking the site live and then upgrading it, I decided to build the site with 1.51 and then load up the data.
Anyway, during testing the RSS feeds worked fine. Yesterday I was going to tell a friend how to use the RSS feeds only to discover they are broken.
I will fix them as soon as possible and let you know when they work again. Sorry for the inconvenience.