BINDDN in ldap.conf

[Artur Kokoszka <kokoszka@ite.waw.pl>]

Hello list

When I  use a command:
ldapsearch -x '(objectclass=*)' -W -D "cn=admin, dc=example, dc=com"
all works good.
But when I add BINDDN into the /etc/ldap/ldap.conf file, and try to use:
ldapsearch -x '(objectclass=*)' -W
I've got an error:
ldap_bind: Invalid credentials (49)

I use debian sarge with standard ldap/slapd packege (v2.1).
My /etc/ldap/ldap.conf file contains:

BASE    dc=example,dc=com                        #works good
URI     ldap://localhost/                                   #works good
BINDDN  cn=admin,dc=example,dc=com     #does not work

Why default dn bind specified in /etc/ldap/ldap.conf does not work ?

Greetings,
Artur