ok i just had a corrupt table, repair it and now all is ok
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the error when i click on a forum:
SELECT t.*, p.post_time as last_post_time, p.poster_name as last_poster_name, p.icon, p.post_id, p.uid, p.post_karma, p.require_reply, pt.post_text FROM xoops_bb_topics t LEFT JOIN xoops_bb_posts p ON p.post_id = t.topic_last_post_id LEFT JOIN xoops_bb_posts_text pt ON pt.post_id = t.topic_last_post_id WHERE (p.post_time > 0 OR t.topic_sticky=1) AND t.forum_id = 2 AND t.approved = 1 AND p.approved = 1 ORDER BY t.topic_sticky DESC, p.post_time DESC


what can i do now?