Something just doesn't add up. When I go to Manage Categories I see this.
Deleting a category does not delete the posts and links in that category. Instead, posts that were only assigned to the deleted category are set to the category Uncategorized and links that were only assigned to the deleted category are set to Blogroll.
As far as I can tell, Blogroll just keeps the names of a bunch of blogs, why do those old categories go to something called Blogroll?