Mod_authnz_ldap cause Apache2 to dump core

I installed mod_authnz_ldap on Mandriva 2009.0 with urpmi apache-mod_ldap and only got httpd to dump core every time I tried to authenticate with openldap server. Later I found urpmi didn't install a required library apr-util-dbd-ldap when it installed apache-mod_ldap. So the fix is to run urpmi apr-util-dbd-ldap.

I had the following settings in /etc/httpd/modules.d/47_mod_authnz_ldap.conf:

AuthType basic
AuthName "Restricted area"
AuthBasicProvider ldap
AuthLDAPBindDN "uid=ldap,dc=example,dc=com"
AuthLDAPBindPassword secret
AuthLDAPURL "ldap://server/ou=people,dc=example,dc=com?uid?one"
Require valid-user