Those interested in Psearch might look into implementing the Lightweight Client Update Protocol (LCUP) instead. LCUP is intended to be a standard track replacement for persistent search, triggered search, and similar LDAP extensions. LCUP I-Ds are relatively mature, should be ready for LDUP WG last call soon. http://www.ietf.org/internet-drafts/draft-ietf-ldup-lcup-02.txt Kurt