I have been having a problem with my stats and have posted before about. I just notice that my logwatch has the following :
zimbra => root
------------------------------------------------------------------------------
/opt/zimbra/libexec/zmmailboxdmgr - 718 Times.
/opt/zimbra/libexec/zmmtastatus - 718 Times.
/opt/zimbra/libexec/zmqstat
/opt/zimbra/postfix-2.4.3.3/sbin/postconf -h queue_directory
/opt/zimbra/postfix-2.4.3.3/sbin/postconf -h hash_queue_depth
/opt/zimbra/libexec/zmqstat
/opt/zimbra/libexec/zmqstat deferred
/opt/zimbra/postfix-2.4.3.3/sbin/postconf -h queue_directory
/opt/zimbra/postfix-2.4.3.3/sbin/postconf -h hash_queue_depth
/opt/zimbra/postfix-2.4.3.3/sbin/postconf -h queue_directory
/opt/zimbra/postfix-2.4.3.3/sbin/postconf -h hash_queue_depth
/opt/zimbra/libexec/zmqstat deferred
/opt/zimbra/libexec/zmqstat
/opt/zimbra/postfix-2.4.3.3/sbin/postconf -h queue_directory
/opt/zimbra/postfix-2.4.3.3/sbin/postconf -h hash_queue_depth
/opt/zimbra/postfix-2.4.3.3/sbin/postconf -h queue_directory
/opt/zimbra/postfix-2.4.3.3/sbin/postconf -h hash_queue_depth

Any ideas what the specific problem is?