Hi, I am new on the list but not new with Bioclusters. I am trying to setup an authentication system for our 64 node cluster that integrates with our web services (all Apache/PHP based) and our desktop management (mix of XP, Mac OS X and Linux). At the moment there's no authentication platform for any of these (other then local files). Is there a commercial solution that you might recommend that integrates authentication among all these plaforms ? I checked on Vintela and Novell but I wanted to know what other people are doing. I could just run a secure OpenLDAP but its management tools leave much to be desidered and our management prefers commercial tools for businees continuity purposes. Any ideas ? Thanks much, Luigi--