I have a new 8.0 install on centos 6.3 and I can't get the stats service to run.

Host mx3.biblio.com
antispam Running
antivirus Running
convertd Running
ldap Running
logger Running
mailbox Running
mta Running
snmp Running
spell Running
stats Stopped
zmconfigd Running

[zimbra@mx3 ~]$ zmstatctl status
Running: zmstat-df
Running: zmstat-cpu
Running: zmstat-proc
Running: zmstat-convertd
process 32171 in /opt/zimbra/zmstat/pid/zmstat-mysql.pid not running
Running: zmstat-mtaqueue
Running: zmstat-fd
Running: zmstat-vm
Running: zmstat-allprocs
Running: zmstat-io-x
Running: zmstat-io
Running: zmstat-ldap

I've run fixperms and also checked the sudoers file -- things look good there.

Not finding much useful in the logs -- other posts that I've seen so far don't fix this.

The zmconfigd.log has some warnings though:
log4j:WARN No appenders could be found for logger (zimbra.security).
log4j:WARN Please initialize the log4j system properly.
log4j:WARN See Apache log4j 1.2 - Frequently Asked Technical Questions for more info.

Any ideas or advice would be appreciated!