title: Unwanted caching of web page
body: <p>I have a problem of web pages being cached even though I specify that it should not. Take the simple example :</p>
  
  <pre><code>&lt;html&gt;
  &lt;head&gt;
  &lt;meta http-equiv="Cache-Control" content="no-cache, no-store, must-revalidate"&gt;
  &lt;meta http-equiv="Pragma" content="no-cache"&gt;
  &lt;meta http-equiv="Expires" content="0"&gt;
  &lt;/head&gt;
  &lt;?php
      print date("Y/m/d H:i:s");
  ?&gt;
  &lt;/html&gt;
  </code></pre>
  
  <p>Hitting refresh several times in my browser indicates that this page is not reloaded as the time stays the same. It will eventually refresh if I keep on hitting the refresh button in the browser. Where could this page be cached and how can I avoid it?</p>
  
  <p>I'm using Apache 2.2.15, PHP 5.3.2 on openSuse 11.2, and my testing browser is Firefox 3.5.7 on the same machine.</p>