Database error in vBulletin 3.6.8:

Invalid SQL:

		SELECT 
			IF(votenum >= 1, votenum, 0) AS votenum,
			IF(votenum >= 1 AND votenum > 0, votetotal / votenum, 0) AS voteavg,
		 post.pagetext AS preview,
			thread.threadid, thread.title AS threadtitle, thread.forumid, pollid, open, replycount, postusername, postuserid, thread.iconid AS threadiconid,
			thread.lastpost, thread.lastposter, thread.lastpostid, thread.dateline, IF(views<=replycount, replycount+1, views) AS views, notes, thread.visible, sticky, votetotal, thread.attach,
			hiddencount, deletedcount
			, NOT ISNULL(subscribethread.subscribethreadid) AS issubscribed
			, deletionlog.userid AS del_userid, deletionlog.username AS del_username, deletionlog.reason AS del_reason
			
			, threadredirect.expires
			
		FROM thread AS thread
			LEFT JOIN deletionlog AS deletionlog ON(thread.threadid = deletionlog.primaryid AND deletionlog.type = 'thread')
			 LEFT JOIN subscribethread AS subscribethread ON(subscribethread.threadid = thread.threadid AND subscribethread.userid = 1 AND canview = 1)
			
			LEFT JOIN post AS post ON(post.postid = thread.firstpostid)
			
			LEFT JOIN threadredirect AS threadredirect ON(thread.open = 10 AND thread.threadid = threadredirect.threadid)
			
		WHERE thread.threadid IN (0,86205,85825,86204,85783,85908,84924,85023,84341,84205,74350,83973,54679,82341,81804,81397,81611,77186,71722,22250,2549,24000,2149,74821,12570,1903,57071,9314,22680,19914) 
		ORDER BY sticky DESC, lastpost DESC;

MySQL Error  : Table './murder_forum/post' is marked as crashed and last (automatic?) repair failed
Error Number : 144
Date         : Friday, September 5th 2008 @ 01:07:14 PM
Script       : http://www.siteismi.com/forum-hakkinda-f3.html
Referrer     : http://www.isiteismi.com/