When applying the final fixes suggested, I now get 2 strange login prompts when opening my browser going to my home page (MSN) from both Firefox and IE. See below
Enter user name and password for "" at http://bp.specificclick.net (with a user name and password dialog box)
I hit cancel, then one more pops up
Enter user name and password "bp.specificclick.net" at http://bp.specificclick.net (with a user name and password dialog box)
I hit cancel it the browser is fine from that point.
Everything else is running perfectly.