[Boofo]

That's the top poster query, right? If it is, here is what you need to run for that query:

PHP Code:

    $topposter = $DB_site->query_first("
        SELECT user.userid, user.username, COUNT(post.postid) AS postcount
        FROM " . TABLE_PREFIX . "post
        LEFT JOIN " . TABLE_PREFIX . "thread ON (post.threadid = thread.threadid)
        LEFT JOIN " . TABLE_PREFIX . "user ON (post.userid = user.userid)
        WHERE thread.forumid=$forumid
        GROUP BY post.userid
        ORDER BY postcount DESC
        LIMIT 1
    ");