Net-LDAPapi
This is good news! Clayton Donley's Net-LDAPapi version 2.00 2.01 has been released, and it is available here. Net-LDAPapi is very much faster than Perl-LDAP (Net::LDAP). Quanah Gibson-Mount of Symas added support for the OpenLDAP SDK.
There is a small omission in the generated Makefile (after the ubiquitous perl Makefile.PL and before the make): the libraries for the linker are missing. Fix that by adding -lldap -llber to it. (thanks to Howard Chu for opening my eyes). 
Quanah Gibson-Mount wrote on 20-Aug-08 at 4:54 am
Eh, it's no longer Clayton's Net-LDAPapi, and I didn't add openldap support, but I did expand it.