jQuery on Rails and Addressing CSRF Issue

It seems that rails 3.0 has some vulnerabilities when it comes to cross site forgery protection. To that end, all ajax requests that are made without a csrf token results in the user being removed from the session. In order to address this in rails with jQuery the following steps can be followed:-
1. Add the csrf meta tag in your layouts - <%= csrf_meta_tag %>
2. Download and add the rails.js from https://github.com/rails/jquery-ujs.
3. Replace <%= javascript_include_tag ':defaults %> with <%= javascript_include_tag 'jquery-1.5.1', 'application', 'rails' %>
4. Add jrails gem into your GemFile or environment.rb file.
This should get forgery protection ajax working.