csrf_protection in codeigniter 2.0.2

[eluser]JoostV[/eluser]
When you clear cache and history you may well delete all session cookies as well. Did you check that the session started correctly before the first post? If not the token is not stored in session correctly.

You can easily check if this is the case. Open Firefox and go to the post page; delete all cookies using the Web Developer toolbar; load the page again; check if a session cookie has been set using the Web Developer toolbar.