mysql_connect(): Access denied for user Bridging CMS with VB

[onetwomany]

I have searched for hours trying to find the answer, with no luck.

Hopefully someone can help =]

I installed joomla and vbulletin in seperate databases
lets say the vb database is called user_vb and the joomla database is called user_joom, I installed the vbridge for my version of vbulletin and that went fine.

Everything seems to work ok except for logging in and out, when I try either I get the following error:

Database error in vBulletin 3.5.1:

mysql_connect(): Access denied for user 'user_joom'@'localhost' (using password: YES)
/home/user/public_html/forum/includes/class_core.php on line 273

the joomla bridge also patches .config.php at the bottom:

//<!-- Begin Joomla-vBridge from WH-SOLUTION -->

define('MOS_PATH','/home/user/public_html');
define('MOS_URL','http://sitename.com');
define('MOS_HOST','localhost');
define('MOS_USER','user_joom');
define('MOS_PASS','*******');
define('MOS_NAME','user_joom');
define('MOS_PREFIX','jos_');
//<!-- End Joomla-vBridge -->

(I replaced my username with 'user' in this post, it is not my actualy username)

Ive also tried adding the user: user_joom to the database user_vb and still get the same error.

Any advice would be much appreciated.