Need help - Site down, don't know where to start
 

Hey everyone, the title sort of says the main part in a nut shell, so here are the details.

Sunday Morning we hit a size limit on our MySQL DB size, and so it locked itself. We've been dealing with all sorts of problems from that moment on.

We now have the DB expanded to 1000 MB's, and I can run SQL commands on it through SSH, but the site is still down. We're getting a different error page now though, its a vBulletin page saying...

Database Error Database error
The database has encountered a problem.
Please try the following:

* Load the page again by clicking the Refresh button in your web browser.
* Open the www.modernmuscleforum.com home page, then try to open another page.
* Click the Back button to try another link.

The www.modernmuscleforum.com forum technical staff have been notified of the error, though you may contact them if the problem persists.

We apologise for any inconvenience.

I've been getting E-Mail error's about 3 a minute, and have nearly a thousand now :eek:

Here's what they're saying now.

Database error in vBulletin :

mysql_connect() [function.mysql-connect]: Can't connect to local MySQL server through socket '/tmp/mysql.sock' (2) /data/18/1/77/162/1729651/user/1867673/htdocs/includes/class_core.php on line 311

MySQL Error :
Error Number :
Request Date : Monday, April 13th 2009 @ 09:56:38 PM
Error Date : Monday, April 13th 2009 @ 09:56:38 PM
Script : http://www.modernmuscleforum.com/index2.php
Referrer :
IP Address : 98.243.156.118
Username :
Classname : vB_Database
MySQL Version :

I tried following this thread (at first this was the same error I was getting)
http://www.vbulletin.com/forum/showthread.php?t=279702

so, as in that thread I have also edited the config.php as well; does this seem like something that be caused if I screwed up a value in the config.php without noticing?

Like I said, with this error, I'm just at a loss as to where to start.

Help please.:(