Database error in vBulletin 3.7.3:

Invalid SQL:

		SELECT post.*, IF(post.userid = 0, post.username, user.username) AS username
		FROM post AS post
		LEFT JOIN user AS user ON (user.userid = post.userid)
		WHERE post.visible = 1
			AND post.userid NOT IN (deleted) 
			AND post.threadid = 309875
		ORDER BY dateline DESC, postid DESC
		LIMIT 41;

MySQL Error   : MySQL server has gone away
Error Number  : 2006
Request Date  : Wednesday, September 9th 2009 @ 09:06:00 AM
Error Date    : Wednesday, September 9th 2009 @ 09:08:01 AM
Script        : http://www.flyertalk.com/forum/newreply.php?do=newreply&p=12344482
Referrer      : http://www.flyertalk.com/forum/omni/309875-who-will-next-flyertalk-member-post-omni-game-3170.html
IP Address    : (withheld by me — will provide it upon request if necessary, although the technical staff which maintains FlyerTalk should be able to access it)
Username      : Canarsie
Classname     : vB_Database_MySQLi
MySQL Version :