diff -ur redmine-0.9.3/app/controllers/account_controller.rb redmine/app/controllers/account_controller.rb
--- redmine-0.9.3/app/controllers/account_controller.rb	2010-02-28 13:28:06.000000000 +0300
+++ redmine/app/controllers/account_controller.rb	2010-04-13 16:27:28.218550906 +0400
@@ -150,6 +153,7 @@
 
   
   def open_id_authenticate(openid_url)
+    cookies[:back_url] = { :value => CGI.unescape(params[:back_url].to_s) } unless params[:open_id_complete]
     authenticate_with_open_id(openid_url, :required => [:nickname, :fullname, :email], :return_to => signin_url) do |result, identity_url, registration|
       if result.successful?
         user = User.find_or_initialize_by_identity_url(identity_url)
diff -ur redmine-0.9.3/app/controllers/application_controller.rb redmine/app/controllers/application_controller.rb
--- redmine-0.9.3/app/controllers/application_controller.rb	2010-02-28 13:28:06.000000000 +0300
+++ redmine/app/controllers/application_controller.rb	2010-04-12 00:33:05.696050003 +0400
@@ -177,6 +177,10 @@
 
   def redirect_back_or_default(default)
     back_url = CGI.unescape(params[:back_url].to_s)
+    if back_url.blank?
+      back_url = cookies[:back_url]
+      cookies.delete :back_url
+    end
     if !back_url.blank?
       begin
         uri = URI.parse(back_url)