title: ActionController::InvalidAuthenticityToken in SessionsController#create error
body: <p>I get this error in Rails 2.3.9 but not in 2.3.8. I didn't changed any code. Did I missed anything?</p>
  
  <pre><code>ActionController::InvalidAuthenticityToken in SessionsController#create ActionController::InvalidAuthenticityToken
  </code></pre>
  
  <p>Thanks :)</p>
  
  <p>Here are the added details.</p>
  
  <pre><code>Request
  
  Parameters:
  
  {"commit"=&gt;"Login",
   "authenticity_token"=&gt;"A9A4+sCsA/81FFoXJEUNziQYhgQ38pceGN2i7MUQbQY=",
   "password"=&gt;"r3dp0rt"}
  </code></pre>
  
  <p>Here's the code in the application controller</p>
  
  <pre><code>class ApplicationController &lt; ActionController::Base
    helper :all # include all helpers, all the time
    protect_from_forgery :secret =&gt; "r3dp0rtP@$$", :digest =&gt; "MD5" # See ActionController::RequestForgeryProtection for details
  </code></pre>
  
  <p>Here's the code from my session create controller</p>
  
  <pre><code>  def create
      session[:password] = params[:password]
      flash[:notice] = "Sucessfully logged in"
      redirect_to "/login"
    end
  </code></pre>
  
  <p>and lastly here's the code from my simple login view</p>
  
  <pre><code>&lt;div id="placeholder"&gt;
    &lt;% form_tag :action =&gt; "create" do %&gt;
      &lt;p&gt;
      &lt;%= label_tag "This will enable administrative features for the site." %&gt;&lt;br&gt;
      &lt;%= password_field_tag "password" %&gt;
      &lt;/p&gt;
      &lt;br&gt;
      &lt;p&gt;
      &lt;%= submit_tag "Login" %&gt;
      &lt;/p&gt;
    &lt;% end %&gt;
  &lt;/div&gt;
  </code></pre>