Database error message: wp_posts

Hello everyone, I just upgraded WP to 2.3.2 and I’m getting this error message on my header. Does anyone know how to fix it? Thanks in advance!

WordPress database error: [Unknown table ‘wp_posts’]
SELECT DISTINCT wp_posts.* FROM wp_posts AS p LEFT JOIN wp_postmeta as pl_wp_postmeta ON (p.ID = pl_wp_postmeta.post_id) WHERE (post_type = ‘page’ AND (p.post_status = ‘publish’ OR (p.post_status = ‘private’ AND (pl_wp_postmeta.meta_key = ‘post_level’ AND pl_wp_postmeta.meta_value <= 1 )))) ORDER BY menu_order, post_title ASC