Refactoring of message system.

app/controllers/home_controller.rb

@@ -8,7 +8,7 @@ class HomeController < ApplicationController
     @unaccepted_tasks = @current_user.unaccepted_tasks
     # task in next week
     @next_tasks = @current_user.next_tasks
-    @messages = Message.user.find :all, :limit => 5
+    @messages = Message.all :order => 'created_at DESC', :limit => 5
     # count tasks with no responsible person
     # tasks for groups the current user is not a member are ignored
     tasks = Task.find(:all, :conditions => ["assigned = ? and done = ?", false, false])