vBulletin Database Error!

[milad-sasha]

how i can solve this problem

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)
/home/rossoner/domains/rossoneri.ir/public_html/includes/class_core.php on line 314

MySQL Error :
Error Number :
Request Date : Sunday, January 15th 2012 @ 08:32:09 PM
Error Date : Sunday, January 15th 2012 @ 08:32:09 PM
Script : http://www.rossoneri.ir/
Referrer : http://www.rossoneri.ir/index.php
IP Address : 85.133.212.51
Username :
Classname : vB_Database
MySQL Version :

[Lynne]

MySQL can't connect (through socket):

See this page for the causes of this error: https://www.vbulletin.com/docs/html/cantconnect You will most likely need to talk to your host in order to fix the issue.