[Lynne]

Here's the error, minus the IP:

Database error in vBulletin 3.6.2:

Invalid SQL:

		SELECT 
			userfield.*, usertextfield.*, user.*, UNIX_TIMESTAMP(passworddate) AS passworddate,
			IF(displaygroupid=0, user.usergroupid, displaygroupid) AS displaygroupid,
			language.phrasegroup_wol AS phrasegroup_wol,
			language.phrasegroup_global AS phrasegroup_global,
			language.options AS lang_options,
			language.languagecode AS lang_code,
			language.charset AS lang_charset,
			language.locale AS lang_locale,
			language.imagesoverride AS lang_imagesoverride,
			language.dateoverride AS lang_dateoverride,
			language.timeoverride AS lang_timeoverride,
			language.registereddateoverride AS lang_registereddateoverride,
			language.calformat1override AS lang_calformat1override,
			language.calformat2override AS lang_calformat2override,
			language.logdateoverride AS lang_logdateoverride,
			language.decimalsep AS lang_decimalsep,
			language.thousandsep AS lang_thousandsep
			
		FROM vb_user AS user
		LEFT JOIN vb_userfield AS userfield ON (user.userid = userfield.userid)
		LEFT JOIN vb_usertextfield AS usertextfield ON (usertextfield.userid = user.userid) LEFT JOIN vb_language AS language ON (language.languageid = IF(user.languageid = 0, 1, user.languageid)) 
		
		WHERE user.userid = 3;

MySQL Error  : Got error 12 from table handler
Error Number : 1030
Date         : Monday, April 9th 2007 @ 05:56:14 AM
Script       : http://www.hamara-forum.com/online.php?order=asc&sort=username&pp=20&page=1
Referrer     : 
IP Address   : xx.xxx.xx.xxx
Username     : 
Classname    : vb_database

And then I found this page: http://www.vbulletin.com/forum/showthread.php?t=118580 which says that error 12 is a server memory error.