Please help me to fix this error.. I get this error while I'm trying to upgrade to 4.1. 
Database error in vBulletin 4.1.0 Beta 1
Invalid SQL: INSERT INTO setting (varname, grouptitle, value, datatype,defaultvalue)VALUES('socnet', 'user', '', 'integer' ,'63');
MySQL Error : Duplicate entry 'socnet' for key 1
Error Number : 1062
Request Date : Thursday, December 2nd 2010 @ 10:49:55 PM
Error Date : Thursday, December 2nd 2010 @ 10:49:55 PM
Script : http://www.xxx.com/install/upgrade.php
Referrer : http://www.xxx.com/install/upgrade.php
Classname : vB_Database
MySQL Version : 5.0.51a-24+lenny4-log

Database error in vBulletin 4.1.0 Beta 1
Invalid SQL: INSERT INTO setting (varname, grouptitle, value, datatype,defaultvalue)VALUES('socnet', 'user', '', 'integer' ,'63');
MySQL Error : Duplicate entry 'socnet' for key 1
Error Number : 1062
Request Date : Thursday, December 2nd 2010 @ 10:49:55 PM
Error Date : Thursday, December 2nd 2010 @ 10:49:55 PM
Script : http://www.xxx.com/install/upgrade.php
Referrer : http://www.xxx.com/install/upgrade.php
Classname : vB_Database
MySQL Version : 5.0.51a-24+lenny4-log
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