My search for LDAP continue with the another admin interface for Linux. Ebox Platform
From Ebox Platform website
Imagine a technology that lets you manage easily any service in a corporate network, no matter how large or small, saving tons of time and avoiding errors. Imagine that you can easily adapt it and extend its functionality. Imagine that it is open source. Well, that's eBox.
Just one problem, it's build for Ubuntu. :(
I've already try Centos-ds but it's not easy to installed. It's still under centos5 testing repos.
One more option is to used horde hooks to manage LDAP users.