You now mention Novell eDirectory, but are still harping on the Microsoft ActiveDirectory vs. UNIX authentication protocols. You don't compare Microsoft AD with Novell eDirectory at all...
Obviously this is a weak ploy to do a Microsoft vs. Linux/UNIX argument and put it into print. But in doing so, you are doing yourself and your readers a diservice by ignoring a true directory service IF the intent was to do a directory service comparison.
Or are you simply afraid that in comparing Novell eDirectory to Microsoft ActiveDirectory, you will find out just how much the Microsoft product pales in comparison?
Be afraid, be very afraid.