Help – Database error

My index template was perfectly fine yesterday but for some reason, it’s giving out an error now.
Database error: [Got error 28 from table handler]
SELECT DISTINCT * FROM wp_posts WHERE 1=1 AND post_date_gmt <= ‘2004-12-22 15:53:59’ AND (post_status = “publish”) GROUP BY wp_posts.ID ORDER BY post_date DESC LIMIT 7
Is that my database problem or something dealing with WordPress? My site is http://tarnished-crown.org
Thanks!