مشكلة رسائل الأخطاء ع البريد ..!

Database error in vBulletin 3.8.5:

[CENTER]Invalid SQL:
 
[CENTER]SELECT thread.threadid, thread.title, thread.lastpost, thread.forumid, thread.replycount, 
thread.lastposter, thread.dateline, thread.postusername, thread.postuserid, thread.iconid,
IF(views<=replycount, replycount+1, views) AS views, thread.visible, thread.open, 
user.username, user.userid, user.usergroupid, 
IF(displaygroupid=0, user.usergroupid, displaygroupid) AS displaygroupid
FROM thread AS thread
LEFT JOIN user AS user ON (user.username = thread.lastposter)
WHERE NOT ISNULL(thread.threadid) AND thread.visible = '1' AND thread.open != '10' 
AND thread.forumid NOT IN(30,,26,25,30)
ORDER BY lastpost DESC 
LIMIT 0, 10;[/CENTER]
 
[CENTER]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 '26,25,30)
ORDER BY lastpost DESC 
LIMIT 0, 10' at line 9
Error Number : 1064
Request Date : Monday, June 28th 2010 @ 05:07:11 AM
Error Date : Monday, June 28th 2010 @ 05:07:11 AM
Script : [URL="http://www.arabgm.net/vb/forumdisplay.php?f=44"][COLOR=#0068cf]http://www.arabgm.net/vb/forumdisplay.php?f=44[/COLOR][/URL]
Referrer : 
IP Address : ؟؟؟!!!؟؟؟؟؟
Username : غير مسجل
Classname : vB_Database
MySQL Version :[/CENTER]