ultimi 5 thread su IPB

[idioteque.it]

ho un problema. con il seguente codice non riesco a visualizzare gli ultimi 5 thread del mio forum IPB. cosa c'è che non va?

<?php
/*
+--------------------------------------------------------------------------+
|   Show topic script                                                         |
|   ========================================                               | 
|   author: Trashofmasters                                                 |
|   ========================================                               |
+--------------------------------------------------------------------------+
|   ========================================                               |
|   this software is distribuited under                                    |                          
|   the GNU-GPL license                                                    |
|   ========================================                               |
|                                                                          |
+--------------------------------------------------------------------------+
|                     Invision power board 1.3                             |
+--------------------------------------------------------------------------+
*/

//topic show limit 
$limit = 5;

//Forum directory
define(FORUM_PATH,'upload/');

//require the configuration file
include(FORUM_PATH.'conf_global.php');

//connect to the forum database
     $conn = mysql_connect($INFO['sql_host'],$INFO['sql_user'],$INFO['sql_pass']) or die('error during the database connection');    
     $db = mysql_select_db($INFO['sql_database'], $conn) or die('error during the database connection');
     
//select the last topics limit by $limit 
     $query  = "SELECT * FROM `" .$INFO['sql_tbl_prefix']. "topics` WHERE `state`='open' ORDER BY `tid` DESC LIMIT $limit";
     $select = mysql_query($query);
     echo '<table width="300" border="0" cellspacing="0" cellpadding="0" class="tab">
          <tr>
            <td width="300">Ulimi thread </td>
          </tr>';
     while ($threads = mysql_fetch_array($select))
     {
     echo'<tr>
            <td width="300" class="content">» [url="',FORUM_PATH,'index.php?showtopic=',$threads['tid'],'"]',$threads['title'],'[/url]
            </td>
        </tr>';
     }
     echo "</table>";
     
?>