[horde] Admin->User,List user problem

[David Chang]

Hi all:
Horde CVS updated.
Horde complain when click admin->user

Undefined index: username in /usr/local/apache/horde.beta/lib/Auth/ldap.php

ENV:
LDAP Server:openldap 2.0.25

horde/config/conf.php
---------------------
$conf['auth']['driver'] = 'ldap';
$conf['auth']['params'] = array();
$conf['auth']['params']['hostspec'] = 'ldap.example.com';
$conf['auth']['params']['basedn'] = 'dc=test,dc=example.com';
$conf['auth']['params']['uid'] = 'uid';

P.S
1. cn was stored in UTF-8 format in ldap server,ldap server version=3
2. Such problem also happens in Giapeto->admin