One of my members is having problems with the My Threads and My replies links - they get a database error. I think it might be because they have an apostrophe in their name? Any ideas?

Thanks
Database error in vBulletin 3.5.0 Release Candidate 3:
Invalid SQL:
SELECT posts, userid, username FROM user AS user
WHERE username = 'Wesley's Sylyna';
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 's Sylyna'' at line 2
Error Number : 1064
Script :
http://www.buffy-boards.com/search.p...0&exactnam e=1&searchuser=Wesley\'s%20Sylyna