Database error in vBulletin 3.7.3

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Database error in vBulletin 3.7.3:
Invalid SQL:
SELECT user.userid, user.usergroupid FROM user AS user WHERE user.userid >= 330 AND user.usergroupid IN (5,20,23,7,6,22,25,2,24,2 1,0) LIMIT 1;
MySQL Error : MySQL server has gone away
Error Number : 2006
Request Date : Tuesday, March 17th 2009 @ 02:02:31 AM
Error Date : Tuesday, March 17th 2009 @ 02:02:54 AM
Script : http://www.3rabland.com/vb/c_news_letter.php?
Referrer : http://www.3rabland.com/vb/c_news_le...nd_news_letter
IP Address :
Username : P r i N c e
Classname : vB_Database
MySQL Version :