title: Cache Control fails
body: <p>My index.php page keeps being cached, showing old timer values and others, even though I'm using this:</p>
  
  <pre><code>session_cache_limiter( 'nocache' );
  session_start( );
  header( 'Cache-Control: no-cache, must-revalidate, post-check=0, pre-check=0' );
  </code></pre>
  
  <p>to keep the browser from caching the page. I've checked the headers output in Firefly and they keep saying:</p>
  
  <pre><code>Cache-Control:private, max-age=10800, pre-check=10800
  </code></pre>
  
  <p>I used to have this in the HTML META:</p>
  
  <pre><code>&lt;META HTTP-EQUIV="cache-control" content="no-cache" /&gt;
  &lt;META HTTP-EQUIV="Pragma" CONTENT="no-cache"&gt;
  &lt;META HTTP-EQUIV="Expires" CONTENT="-1"&gt;
  </code></pre>
  
  <p>But have already disabled those in order to check if they were interfering, but enabled or disabled doesn't make a difference.</p>
  
  <p>All help is appreciated!</p>