In Snow Leopard Server it seems that someone at Apple figured out that a bunch of people were building these weird triangle, or dual directory, thingies. So, if you bind a Mac OS X Server to Active Directory and then open Server Admin and then click on Open Directory you’ll see a button to Kerberize Services. Once you’ve Kerberized the services, if you click on the Change… button for Role you’ll see a different option than you normally see when setting an Open Directory Master. In the Choose Directory Role screen you’ll see a new screen that tells you that you’re connected to another directory. It will then ask if…