rails 3.2 поддоменов и devise

У меня есть приложение, в котором пользователи могут входить в поддомен своей фирмы.

Я использую devise. И этот код перенаправляет пользователя из корневого домена в поддомен.

def after_sign_in_path_for(resource_or_scope)
  scope = Devise::Mapping.find_scope!(resource_or_scope)
  subdomain_name = current_user.firm.subdomain
  if current_subdomain.nil?
    # logout of root domain and login by token to subdomain
    token =  Devise.friendly_token
    current_user.loginable_token = token
    current_user.save
    sign_out(current_user)
    flash[:notice] = nil
    home_path = valid_user_url(token, :subdomain => subdomain_name)
    return home_path
  else
    if subdomain_name != current_subdomain.name
      # user not part of current_subdomain
      sign_out(current_user)
      flash[:notice] = nil
      flash[:alert] = "Sorry, invalid user or password for subdomain"
    end
  end
  super
end

Он работает супер в Chrome, Firefox, Opera и Safari, но он не работает в IE9. Я не получаю сообщений об ошибках. Из журнала я вижу, что пользователь получает сообщение, и когда пользователь перенаправляется на домашнюю страницу, он / она неавторизовано. Кто-нибудь знает, что происходит? Сформируйте журнал.

Processing by SessionsController#create as HTML
Parameters: {"utf8"=>"✓",  
"authenticity_token"=>"JaffZi9f+Uyovuya8wR2u7LjG9w/3wdUDqTqONt/kFM=", 
"user"=>{"email
"=>"andreas@lizz.no", "password"=>"[FILTERED]", "remember_me"=>"0"}, 
"commit"=>"Sign in"}
User Load (0.0ms)  SELECT "users".* FROM "users" WHERE 
"users"."email" = ''whatever@atlatis.at' LIMIT 1
(0.0ms)  begin transaction
(1.0ms)  UPDATE "users" SET 
"last_sign_in_at" = '2012-03-02 20:46:06.658370', 
"current_sign_in_at" = '2012-03-
02 20:56:29.481286', "sign_in_count" = 41, 
"updated_at" = '2012-03-02 20:56:29.482286' WHERE "users"."id" = 1
[paperclip] Saving attachments.
(62.0ms)  commit transaction
Firm Load (0.0ms)  SELECT "firms".* FROM "firms" WHERE "firms"."id" = 1 LIMIT 1
Firm Load (0.0ms)  SELECT "firms".* FROM "firms" WHERE "firms"."subdomain" = 'den' LIMIT 1
CACHE (0.0ms)  SELECT "firms".* FROM "firms" WHERE "firms"."subdomain" = 'den' LIMIT 1
Redirected to http://den.lvh.me:3000/
Completed 302 Found in 182ms (ActiveRecord: 0.0ms)


Started GET "/" for 127.0.0.1 at 2012-03-02 21:56:29 +0100
Processing by PrivateController#statistics as HTML
Firm Load (0.0ms)  SELECT "firms".* FROM "firms" WHERE "firms"."subdomain" = 'den' LIMIT 1
Completed 401 Unauthorized in 2ms


Started GET "/users/sign_in" for 127.0.0.1 at 2012-03-02 21:56:29 +0100
Processing by SessionsController#new as HTML
Rendered devise/_links.erb (2.0ms)
Rendered devise/sessions/new.html.erb within layouts/registration (13.0ms)
Completed 200 OK in 27ms (Views: 26.0ms | ActiveRecord: 0.0ms)