Problem with file addentry.php - version 2.4.3

There's a problem in addentry entries on guestbook, after upgrade to version 2.4.3: ///////////////////////

Query Error
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MySQL Error : Query Error
Error Number: 1064 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 'SET session_id='9e035c2ccd5fc96b1e010bafbe965b14', validate_key='oPMQGF', timest' at line 1
Date : Sun, May 25, 2008 00:10:09
IP : 82.105.154.2
Browser : Mozilla/4.0 (compatible; MSIE 7.0; Windows NT 5.1; .NET CLR 1.1.4322; .NET CLR 2.0.50727; .NET CLR 3.0.04506.30)
Referer : ///////////////////////
PHP Version : 4.4.8
OS : Linux
Server : Apache/1.3.39 (Unix) mod_auth_passthrough/1.8 mod_log_bytes/1.2 mod_bwlimited/1.4 FrontPage/5.0.2.2635 mod_ssl/2.8.30 OpenSSL/0.9.8b
Server Name : ///////////////////////////

What's the problem????

Thanks abc

I've solved. I've insert new file confing.inc.php of version 2.4.3, and insert in it old passwords of database.

Abc