Some time ago I found about the Apache Directory Server [1]. Just one month
ago they released the 1.0 version, and it seems very interesting: you may
have a directory server providing integrated NTP, DHCP, DNS, Kerberos and of
course LDAP services. Has anybody any experience with this? Am I the only
one interested in an ebuild for this?

The Apache Directory Server seems to be integrated in the Geronimo JEE
server [2]. I found that there seems to be no work being done at bugs.g.o[3]

[1] http://directory.apache.org/
[2] http://geronimo.apache.org/
[3] http://bugs.gentoo.org/show_bug.cgi?id=115506

Best regards
Jose