Código funciona en PHP4 pero no en PHP5

[Patriarka]

hace una cosa:
cambia la query por esta:
$DB->query("SELECT *, me.avatar_location, m.view_avs, me.avatar_size, m.id as member_id, m.name AS member_name, m.mgroup, f.name AS forum_name
FROM ibf_posts p
LEFT JOIN ibf_forums f on (t.forum_id=f.id)
LEFT JOIN ibf_topics t on (t.tid=p.topic_id and t.approved=1 and t.moved_to IS NULL)
LEFT JOIN ibf_members m on (p.author_id=m.id)
LEFT JOIN ibf_member_extra me on (m.id=me.id)
WHERE state!='closed' AND approved=1 AND (moved_to IS NULL or moved_to='') $qe
GROUP BY t.last_post
ORDER BY t.last_post DESC
LIMIT 0,$limit");