Databse error

I just upgraded from 2.0.1 to 2.1.3 and got this error after I ran the upgrade script:

WordPress database error: [Duplicate entry '0' for key 1]
INSERT INTO wp_categories (cat_ID, cat_name, category_nicename, category_description, category_parent, links_private, posts_private) VALUES ('0', 'Upcoming Interviews', 'upcoming-interviews', '', '0', '0', '0')

Is this something I need to be worried about? If so, what should I do? I did backup the old files but would hate to have to re-upload them again if avoiding it is at all possible.