title: SharePoint is throwing access denied when url changes from http://site to http://www.site
body: <p>We have a SharePoint 2007 site which has FBA configured (extended the webapp to different zone). The problem is that a user has to authenticate twice when the URL changes from <a href="http://site" rel="nofollow">http://site</a> to <a href="http://www.site" rel="nofollow">http://www.site</a> i.e if the user enters <a href="http://site" rel="nofollow">http://site</a> it asks for username and after authenticating if the user clicks on a url containg <a href="http://www.site" rel="nofollow">http://www.site</a> it authenticates again.</p>
  
  <p>Our host header has both enteries for http and <a href="http://www">http://www</a>.</p>
  
  <p>Can anyone help me fix this issue (why is SharePoint treating http:// and <a href="http://www">http://www</a> differently).</p>