database errors

[SirTalksalot]

My forum has been running fine (www.productionforum.co.uk), but it's suddenly started spewing out database errors all imilar to the following.

 
Database error in vBulletin :

mysql_connect(): Lost connection to MySQL server during query
/homepages/33/d153125422/htdocs/productionforum/includes/class_core.php on line 279

MySQL Error  : 
Error Number : 
Date         : Friday, May 26th 2006 @ 04:42:39 PM
Script       : [URL="http://www.productionforum.co.uk/cron.php?&rand=952133"]http://www.productionforum.co.uk/cron.php?&rand=952133[/URL]
Referrer     : 
IP Address   : 68.142.251.162
Username     : 
Classname    : vb_database

[Wayne Luke]

Errors like this are usually caused by server timeouts. Are you running a query log so we can see what query is causing the problem? It would help troubleshoot.

[SirTalksalot]

No, you'd better tell me how to do that.

[Wayne Luke]

http://dev.mysql.com/doc/refman/4.1/en/query-log.html