Update to rails 3

app/controllers/application_controller.rb

@@ -1,7 +1,7 @@
-# Filters added to this controller will be run for all controllers in the application.
-# Likewise, all the methods added will be available for all controllers.
 class ApplicationController < ActionController::Base
 
+  protect_from_forgery
+
   if STATUS == :database_readonly or STATUS == :database_offline
     session :off
 

app/controllers/diary_entry_controller.rb

@@ -111,8 +111,6 @@ class DiaryEntryController < ApplicationController
   end
 
   def rss
-    request.format = :rss
-
     if params[:display_name]
       user = User.find_by_display_name(params[:display_name], :conditions => { :status => ["active", "confirmed"] })