title: Why is the Magento Logout is not clearing the current session data?
body: <p>I have an issue (I am using an older version of <code>IWD One Page Checkout</code>).</p>
  
  <p>If you are logged in as <code>adam</code> and then <code>log out</code> and checkout as a guest.
  The email it sends will have the previously logged in users data.</p>
  
  <p>Also When you logout the header will still say: </p>
  
  <pre><code>Welcome, Adam Henry! (Not Adam Henry?) My Account Checkout Log In
  </code></pre>
  
  <p>I realised that the name is derived from this:</p>
  
  <p><code>Mage::getSingleton('checkout/session')-&gt;getQuote()-&gt;getData()</code></p>
  
  <p>Which still persists the old session data.</p>
  
  <p>Is this data supposed to be cleared on a logout?</p>