特急，在线等，论坛的数据库问题

求助！出问题了，打不开某论坛，请高手解决，在线等

我用的是一键安装的Discuz!EXP，论坛使用一直很稳定，今天却出现问题了，其中一个子论坛打不开，打开时出现以下报错提示：
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Discuz! info: MySQL Query Error

User: admin
Time: 2006-3-25 2:26pm
Script: /sc_utf8/forumdisplay.php

SQL: SELECT DISTINCT p.authorid AS dotauthor, t.* FROM cdb_threads t LEFT JOIN cdb_posts p ON (t.tid=p.tid AND p.authorid='1')
WHERE t.fid='34' AND t.displayorder>=0
ORDER BY t.displayorder DESC, t.lastpost DESC
LIMIT 0, 20
Error: Table 'p' is marked as crashed and should be repaired
Errno.: 1194

Similar error report has beed dispatched to administrator before.

将MySQL停掉，用myisamcheck检查一下数据库。