As per request by http://groups.google.com/group/activeadmin/msg/87ae141ae19e889d here's my Active Admin dashboard and routes

dashboards.rb

ActiveAdmin::Dashboards.build do
end

rake routes

...
     admin_dashboard        /admin(.:format)                   {:action=>"index", :controller=>"admin/dashboard"}
...
    new_user_session GET    /users/sign_in(.:format)           {:action=>"new", :controller=>"devise/sessions"}
        user_session POST   /users/sign_in(.:format)           {:action=>"create", :controller=>"devise/sessions"}
destroy_user_session GET    /users/sign_out(.:format)          {:action=>"destroy", :controller=>"devise/sessions"}
       user_password POST   /users/password(.:format)          {:action=>"create", :controller=>"devise/passwords"}
   new_user_password GET    /users/password/new(.:format)      {:action=>"new", :controller=>"devise/passwords"}
  edit_user_password GET    /users/password/edit(.:format)     {:action=>"edit", :controller=>"devise/passwords"}
                     PUT    /users/password(.:format)          {:action=>"update", :controller=>"devise/passwords"}
...

routes.rb

MyApp::Application.routes.draw do
  filter :locale # add locale to the beginning of the url. e.g. /en/admin

  ActiveAdmin.routes(self)

  devise_for :users,
    :controllers => {
      :registrations => "registrations"
    }

  ...
end