We are on 7.2.4_GA_2900 build 20130523111005. I recently received a email stating what's below:

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=
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'm not sure what this means. I have not made any changes, such as an upgrade to Zimbra.