Amavis logs to console issue

I have been running Amavisd for several years now. We run Amavisd
2.2.0 on OpenBSD 3.7. The only issue we have is Amavisd logs message
to the console when you log in to the box. I have searched for months
now and have not been able to find the solution. In amavisd.conf if
have:
DO_SYSLOG = 1
$LOGFILE = "$MYHOME/amavis.log"
$log_level = 0;

If anyone has any insight I would greatly appreciate it. We actually
run amavisd on three boxes and all three have this behaviour. Whenever
you need to login to the box, you must stop postifx and do your work,
otherwise your screen gets overwritten (all three are very busy spam
boxes).

Thanks
Shane