saslauthd conf file

[tsg]

Hi 
I installed cyrus-sasl v2.1.13 from sources for a new mail server.
I was surprised, that saslauthd daemon tries to found its conf file 
(saslauthd.conf) in /usr/etc directory, but not in /etc.
During compillation I put following parameters: --prefix=/usr 
--sysconfdir=/etc.

Previous versions, including 2.1.12 works fine for me.

Jun  3 18:44:45 test saslauthd[20660]: do_auth         : auth failure: 
[user=administrator] [service=imap] [realm=] [mech=ldap]
Jun  3 18:45:03 test saslauthd[20661]: Could not open saslauthd config file: 
/usr/etc/saslauthd.conf (No suchfile or directory)

Please help! What I did wrong now?