Database error in vBulletin :

mysql_connect() [<a href='function.mysql-connect'>function.mysql-connect</a>]: Access denied for user 'root'@'localhost' (using password: YES)
/home/ggate/public_html/vb2/includes/class_core.php on line 274

MySQL Error  : 
Error Number : 
Date         : Wednesday, May 23rd 2007 @ 07:34:15 AM
Script       : http://www.ggate.net/vb2/install/upgrade.php
Referrer     : 
IP Address   : 85.154.152.117
Username     : 
Classname    : vb_database