upgraded and now get Database error plz help

[Essex-Poker.co.uk]

Hi i get this error after upgrading to the newer version of vbadvanced running ver 3.6.1

Database error in vBulletin :

mysql_connect() [<a href='function.mysql-connect'>function.mysql-connect</a>]: Can't connect to local MySQL server through socket '/var/lib/mysql/mysql.sock' (2)
/homepages/16/********/htdocs/mm/forum/includes/class_core.php on line 274

MySQL Error :
Error Number :
Date : Thursday, May 31st 2007 @ 12:23:55 AM
Script : script location deleted for security reasons
Referrer :
IP Address : 90.***.87.***
Username :
Classname : vb_database

could someone plz tell me what i have done wrong...cheers

[Essex-Poker.co.uk]

managed to sort the error....But now i have lost my Advanced cpms page, all i have now is my forum homepage....could anyone shed any light on this problem please.

[Essex-Poker.co.uk]

All fixed......

I just went back to my backup of the files i did the day before through my ftp, and overwrote the index.php that i upgraded.

Everything working great now

www.motormeet.co.uk