vBulletin Database Error

[il1uzions]

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/jpl4k3/public_html/includes/class_core.php on line 317

MySQL Error :
Error Number :
Request Date : Saturday, February 23rd 2013 @ 11:55:06 PM
Error Date : Saturday, February 23rd 2013 @ 11:55:06 PM
Script : http://v6mustangsonline.com/activity.php
Referrer : http://v6mustangsonline.com/activity.php
IP Address : 98.127.210.69
Username :
Classname : vB_Database
MySQL Version :


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Not sure why this got sent to me last night via email. I haven't changed anything recently? You experts have any ideas what's wrong? Thanks guys.

[Reycer]

<a href="http://www.vbulletin.com/docs/html/cantconnect" target="_blank">http://www.vbulletin.com/docs/html/cantconnect</a>

[il1uzions]

Everything in my forum seems to be working fine and I haven't recieved another email. Was it just a temporary issue with my host? Sorry for the noob question.