WordPress database error: [Got error 28 from table handler]

WordPress database error: [Got error 28 from table handler]
SELECT * FROM wp_posts WHERE 1=1 AND (post_status = “publish” OR post_author = 1 AND post_status != ‘draft’ AND post_status != ‘static’) GROUP BY wp_posts.ID ORDER BY post_date DESC LIMIT 0, 15

sum1 pls help me take a look at http://kahpeng.com/weblog/
after my latest post, i logout, a few minutes later i check my blog, cant show latest post, but show that there’s table error, so how do i fix it ? =(