Timed out read from www.xignite.com

Hi I have one question. When I make SOAP client I get this message "Timed out read from www.xignite.com ". What is the problem. The service works with PHP5 Soap extension.

Code:
require 'SOAP/Client.php';

$wsdl = new SOAP_WSDL('http://www.xignite.com/xMetals.asmx?wsdl');

$soapclient = $wsdl->getProxy();

$soapclient->setOpt('trace', 1);

$param = array( 

'Type' => "XAU",

'Currency' => "USD");

$headers = new SOAP_Header('Header', 'object',

array('Username' => new SOAP_Value('Username', 'string', EMAIL),

'Password' => new SOAP_Value('Password', 'string', ''),

'Tracer' => new SOAP_Value('Tracer', 'string', ''))

);

$soapclient->addHeader($headers);

$ret = $soapclient->GetLastRealTimeMetalQuote("XAU", "USD");

if(PEAR::isError($ret)){

echo $ret->getMessage();

}

Request generated:

POST /xMetals.asmx HTTP/1.0
User-Agent: PEAR-SOAP 0.11.0-beta
Host: www.xignite.com
Content-Type: text/xml; charset=UTF-8
Content-Length: 762
SOAPAction: "http://www.xignite.com/services/GetLastRealTimeMetalQuote"
Connection: close

<?xml version="1.0" encoding="UTF-8"?>

<SOAP-ENV:Envelope  xmlns:SOAP-ENV="http://schemas.xmlsoap.org/soap/envelope/"
 xmlns:xsd="http://www.w3.org/2001/XMLSchema"
 xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
 xmlns:SOAP-ENC="http://schemas.xmlsoap.org/soap/encoding/"
 xmlns:ns4="http://www.xignite.com/services/"
>
<SOAP-ENV:Header>

<Header SOAP-ENV:actor="http://schemas.xmlsoap.org/soap/actor/next" SOAP-ENV:mustUnderstand="0">
<Username>[email protected]</Username>
<Password></Password>
<Tracer></Tracer></Header>
</SOAP-ENV:Header>
<SOAP-ENV:Body>

<ns4:GetLastRealTimeMetalQuote>
<ns4:Type>XAU</ns4:Type>
<ns4:Currency>USD</ns4:Currency></ns4:GetLastRealTimeMetalQuote>
</SOAP-ENV:Body>
</SOAP-ENV:Envelope>