i use zimbra ver zcs-7.0.1_GA_3105.RHEL5.20110304210448 on centos 5.4. recently I had an error as follows

Database errors found.
/opt/zimbra/mysql/bin/mysqlcheck --defaults-file=/opt/zimbra/conf/my.cnf -S /opt/zimbra/db/mysql.sock -A -C -s -u root --password=Jg13NVwyThGDMhx76Wo817oHJGm
mysql.general_log
Error : You can't use locks with log tables.
mysql.slow_log
Error : You can't use locks with log tables.

I just ask how to fix it. thanks