[Steve Machol]

1. Read this thread:

http://www.vbulletin.com/forum/showt...threadid=69803

2. Quick fix:

Try using mysqldump to create a sql backup your database - mysqldump guide at http://www.sitepoint.com/article/678

Then create a new empty database name and import the mysql sql backup back into the empty database, and edit config.php to point to the new database

Also take a read of

http://www.mysql.com/doc/en/Corrupte...AM_tables.html

and

http://www.vbulletin.com/forum/showt...threadid=69803
mysql4