Database error in vBulletin 4.1.5:

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PHP Code:

Database error in vBulletin 4.1.5:

 Invalid SQL:
 SELECT block.*,
                                        blocktype.productid, blocktype.name AS blocktypename, blocktype.title AS blocktypetitle,
                                        blocktype.description as blocktypedescription, blocktype.allowcache
                                FROM block AS block
                                LEFT JOIN blocktype AS blocktype ON (block.blocktypeid = blocktype.blocktypeid)
                                WHERE 1 AND block.active = 1 AND blocktype.productid IN ('everywhere_sidebar','vsa_topstats','limited_guest_viewing4','eparate','forumcategoryicons','bfeasypages','evbs_sstab_advanced','adv_cmps','vsachatbox','autocheck_boxes','marco1_advanced_quick_rep','sub_forum_manager','lasxtdevel','chip_morethread','gd_davatar','resize_images','todays_top_poster','ms_banned_members_log_40','vsacheckifposted','keycaptcha','ft_manager','crawlability_sitemap','vbulletin','')
                                ORDER BY block.displayorder, block.title;

 MySQL Error   : Got error 28 from storage engine
 Error Number  : 1030
 Request Date  : Tuesday, September 13th 2011 @ 12:44:06 PM
 Error Date    : Tuesday, September 13th 2011 @ 12:44:06 PM
 Script        : http://www.xxxxx.xxx/forum/showthread.php?t=116&page=1
 Referrer      :
 IP Address    : xx.xxxx.xx.xx
 Username      : Unregistered
 Classname     : vB_Database
 MySQL Version : 


i get this problem how to fix this problem

and as i know error 28 is sql space...
but my hosting have more and more space....

how to solve this problem