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RSS feed bug in 2.1a33 for categories with ampersand in title.
I have categories which use '&' in the title. RSS feeds don't work for them.
For example, this category is named "News & Blog Discussion"
I noticed this when hooking my site up to Twitterfeed. I got this back: "Feedurl A feed needs to contain publish dates or GUIDs in order to work with twitterfeed, see..."
As you can see, the RSS feed is blank.
In all, there were three categories using ampersand in their titles. Removing it and replacing with "and" solved the RSS problem.
Version 2.1a33, incidentally.