XML Tags are being stripped

All,

I have been using curl/php to retrieve XML documents from an external web server.  It has been working correctly over the past few years and all of a student, the response I received is stripping the xml tags off.  What could be causing this?  Below is my function I use to retrieved the XML document.  Any help would be appreciated.

function getURL($url) {

  $ch = curl_init();
  $proxy=getProxyServer();
  $user=getUsername();
  $passwd=getPassword();
  $user="$user:$passwd";

  curl_setopt ($ch, CURLOPT_URL, $url);

  curl_setopt ($ch, CURLOPT_RETURNTRANSFER, 1);
  curl_setopt($ch, CURLOPT_TIMEOUT, 300);
  if($proxy!=null)
    curl_setopt($ch, CURLOPT_PROXY,$proxy);
  curl_setopt($ch, CURLOPT_USERPWD,$user);

  $result=curl_exec ($ch);
  curl_close ($ch);

  return $result;
}

_______________________________________________
http://cool.haxx.se/cgi-bin/mailman/listinfo/curl-and-php