Milter-greylist

I just upgraded to milter-greylist-1.6 and notice that if I change the
config file while milter-greylist is running that it dies - even if I only
change the modification time!?!

Jun 15 13:31:02 intranet milter-greylist: reloading
"/etc/mail/greylist.conf"
Jun 15 13:31:02 intranet milter-greylist: reloaded config file in 0.000830s
Jun 15 13:31:02 intranet milter-greylist: pthread_detach failed: No such
process
Jun 15 13:31:02 intranet milter-greylist: Final database dump
Jun 15 13:31:02 intranet milter-greylist: Exiting

Does anyone know what I did wrong and how to fix it?  A Google search
didn't turn up anything interesting.

Thanks!

-----------------------------------------------------------------
Steve Ladendorf                                                           
    Network Manager
sladendorf at blakeschool.org                                        The
Blake School
"The only secure computer is one that's unplugged, locked in a safe,
and buried 20 feet under the ground in a secret location... and I'm
not even too sure about that one"
                                                                      --
Dennis Huges, FBI.