title: 406 and 404 error - issue only with Firefox?
body: <p>website giving 404 and 406 error on Firefox 9.01.</p>
  
  <p>While other browsers like IE8, Opera 11.52,Safari 5.0.4 and Chrome 16.0.912.63 don't have this issue and every page opens normally.</p>
  
  <p>What could be the problem ?    </p>
  
  <p>Some information about page:
  page type:PHP
  basic jquery UI code is present
  Google adsense enabled.</p>
  
  <blockquote>
    <p>Not Acceptable</p>
    
    <p>An appropriate representation of the requested resource / could not be found on this<br>
        server.</p>
    
    <p>Additionally, a 404 Not Found error was encountered while trying to use an<br>
        ErrorDocument to handle the request.</p>
  </blockquote>
  
  <p>For a quick reference I have added tags:</p>
  
  <pre><code>&lt;?xml version="1.0" encoding="UTF-8" ?&gt;
  &lt;!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN"
  "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"&gt;
  &lt;html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en" lang="en"&gt;
  </code></pre>