ISOLATED THE ISSUE: Problem with Upload Image, File, Flash Objects in fckEditor
LIKELY PROBLEM: Authentication Credentials do not persist through multiple browser windows (Image Upload, Object Upload)

This is not a provider problem with the Active Directory, it is a problem with fckEditor + DNN.  When I say that, functionally fckEditor works as expected OUTSIDE of DNN.  However, inside of DNN the problem arises only when you try to insert an image or other object into DNN when another configuration window is required.  Everytime I open the Image Upload window, the Create Table window or Flash Object window - it will log me out and send me back to the login screen upon clicking update, preview or cancel. 

My best hypothesis is that the login credentials are not being sent to the "child" windows and when they send the object/text back to the fckEditor within DNN it reconizes it recieved information from an unauthenticated source.  Therefore it requires re-authentication.

I can give access to anyone who needs it to test this on my "test" portal.

B.T.W. FCKeditor provider has an option you can configure in the web.config inside your DNN to debug many possible behaviors.

Change the FCKDebugMode to true and you will see a lot of information every time you open the editor and the image gallery