Long timeouts on Active Directory LDAP Clients...

...can be related to the referral object, that AD standardly delivers on "not founds"...

Password Synchronization with MS 2003 R2

Installation Instructions for Password Synchronization, UNIX Side Components for Identity Management for UNIX
..seems like R" is going to have some heavy Unix Support, esp in the area of accout management.

Setting up AIX LDAP Client with SSL

Reference from AIX