In my enthusiasm I forgot that I made a 3 line addition to metaweblog.rb in order to make the related posts plugin work. I'm going to paste it here (sorry, Allan) but I will make a diff file in a minute.
def getRelatedPosts(blog_id, username, password, data) call("wordpress.getRelatedPosts", "#{blog_id}", "#{username}", "# {password}", data) end
Brett