My b2evolution Version: Not Entered

i got the below (caused by either page list widget/random post widget) error out of nowhere:

MySQL error!

Got error 28 from storage engine(Errno=1030)

Your query: ItemListLight::query()

SELECT DISTINCT post_ID, post_datestart, post_datemodified, post_title, post_url,

                  post_excerpt, post_urltitle, post_canonical_slug_ID, post_tiny_slug_ID, post_main_cat_ID, post_ptyp_ID

  FROM evo_items__item

 INNER JOIN evo_postcats ON post_ID = postcat_post_ID

 INNER JOIN evo_categories ON postcat_cat_ID = cat_ID

 WHERE ( cat_blog_ID = 1 )

   AND (post_ptyp_ID IN (1000))

   AND (post_datestart <= '2011-01-13 00:18')

   AND ( (  ( post_status = 'private'

   AND post_creator_user_ID = 1 )

    OR post_status IN ('published','protected') ) )

 ORDER BY RAND() DESC, post_ID DESC

 LIMIT 3

Have no idea how to solve it or why it happened.. any ideas?