I keep getting this intermittant database error.

Im not sure if the upgrade is a co-incidence

Database error in vBulletin 4.0.1:

Invalid SQL:

SELECT post.dateline, post.pagetext AS message, post.allowsmilie, post.postid,
thread.threadid, thread.title, thread.prefixid, post.attach,
,avatar.avatarpath, NOT ISNULL(customavatar.userid) AS hascustomavatar, customavatar.dateline AS avatardateline,customavatar.width AS avwidth,customavatar.height AS avheight
FROM post AS post
JOIN thread AS thread ON (thread.threadid = post.threadid)
JOIN forum AS forum ON(forum.forumid = thread.forumid)
LEFT JOIN user AS user ON (post.userid = user.userid)
LEFT JOIN avatar AS avatar ON(avatar.avatarid = user.avatarid) LEFT JOIN customavatar AS customavatar ON(customavatar.userid = user.userid)
AND thread.forumid IN(231,142,148,194,222,198,124,217,225,228,110,100,101,147,219,201,229,111,141,112,117,177 ,176,118,138,106,107,116,135,122,134,133,215,126,207,104,125,209,197,108,152,120,175,230,2 02,196,109,216,211,223,150,203,181,179,187,210,114,189,190,204,165,227,224,154,186,115,212 ,213,214,137,174,136,226,191,151,221,113,188,178,185,149,129,67,182)
AND thread.visible = 1
AND post.visible = 1
AND thread.open <> 10
AND post.dateline > 1261181821

ORDER BY post.dateline DESC
LIMIT 0,5;

MySQL Error : Incorrect key file for table '/tmp/#sql_76ef_0.MYI'; try to repair it
Error Number : 126
Request Date : Monday, January 18th 2010 @ 12:17:01 AM
Error Date : Monday, January 18th 2010 @ 12:17:05 AM
Script : http://www.soapchat.net/forum.php
Referrer : http://www.soapchat.net/showthread.p...rt-error/page3
Username : Pamela
Classname : vB_Database
MySQL Version : 5.0.82sp1