MySQL hiba

Hiba az alábbi parancs végrehajtása közben:
SELECT SQL_CALC_FOUND_ROWS `id`,`title`,`id_text`,UNIX_TIMESTAMP(`date`) AS `date`,`subtitle`,`supertitle`,`intro`,`picture` FROM `news`,`news_articlecategory` WHERE `news`.`id`=`article` AND `category` IN (1) AND `date` < NOW() ORDER BY `important` DESC,`date` DESC LIMIT 0,10

1021: Disk full (/tmp/#sql_7f42_0); waiting for someone to free some space...

/var/www/magyarokanagyvilagban.hu/include/general.class.php, 257. sor

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