authldap does not work with wordpress 2.9.2

Authldap claims to work on wordpress 2.5.0 and up. However this is not right. Users cannot login using ldap, but get a blank screen instead.

From the apache logs:

[Fri Mar 30 15:30:26 2012] [error] [client 134.xxx.168.37] PHP Fatal error: Call to undefined function get_user_meta() in /var/www/html/news/wp-content/plugins/authldap/authLdap.php on line 405, referer: http://[censored]/news/wp-login.php

http://ww.wp.xz.cn/extend/plugins/authldap/