title: CodeIgniter 2.0 always redirected to welcome controller when set uri_protocol as AUTO
body: <p>I just set up a development environment using CodeIgniter 2.0 and in config I leave the <code>uri_protocol</code> as</p>
  
  <pre><code>$config['uri_protocol'] = 'AUTO';
  </code></pre>
  
  <p>But my problem is all Controller/Action request send to the welcome controller. I checked this again by changing the <code>uri_protocol</code> to <code>QUERY_STRING</code> and it works fine for me. Why is this always redirected to welcome controller when using <code>uri_protocol</code> as <code>AUTO</code>?</p>