OK. I would however invest in an upgrade, as things are now very, very fast with the new HDB backend.

I would advise against a switch to Microsoft ADAM, because for the sake of a little easier manangement (and probably quite a bit of Non-standards based LDAP parts), you will lose SO much control for SO much money. A no brainer really as to which to use (as well as the platform it is deployed on).

Getting back to your OP, I would again suggest looking at the server setup.

Just a few thoughts.