SQL-DATABASE ERROR

Database error in WoltLab Burning Board (2.3.6): Invalid SQL: SELECT p.postid FROM bb1_posts p, bb1_threads t WHERE p.threadid=t.threadid AND p.visible=1 AND p.userid='1739' AND t.boardid IN (102,103,104,105,1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,20,19,21,22,23,24,108,107,109,112,113,110,111,115,116,117,120,119,124,122,121,123)
mysql error: Can't open file: 'bb1_posts.MYI' (errno: 145)
mysql error number: 1016
mysql version: 4.1.11-Debian_4sarge7-log
php version: 4.4.4
Date: 09.09.2010 @ 11:31
Script: /forum/search.php?action=user&userid=1739
Referer: