build_forum_cache();

// Update all new PM counters

// set them all to zero.

$query = "
		update	{$config['TABLE_PREFIX']}USER_PROFILE
		set	USER_TOTAL_PM = 0
";
$sth = $dbh->do_query($query,__LINE__,__FILE__);

// cycle through all user ID's that have New PM's.

$query = "
	SELECT count(*) AS count, t1.USER_ID
	FROM {$config['TABLE_PREFIX']}PRIVATE_MESSAGE_USERS AS t1, 
	      {$config['TABLE_PREFIX']}PRIVATE_MESSAGE_TOPICS AS t2
	WHERE t1.TOPIC_ID = t2.TOPIC_ID
	AND   t2.TOPIC_LAST_REPLY_TIME > t1.MESSAGE_LAST_READ
	GROUP BY t1.USER_ID
";

$sti = $dbh->do_query($query,__LINE__,__FILE__);
while (list($total_unread,$PM_UserId) = $dbh -> fetch_array($sti)) {
	$query = "
		update	{$config['TABLE_PREFIX']}USER_PROFILE
		set	USER_TOTAL_PM = ?
		where	USER_ID = ?
	";
	$dbh->do_placeholder_query($query,array($total_unread,$PM_UserId),__LINE__,__FILE__);	
}