C# – ssL HTTPS for windows mobile 6::unable to read transport connection

cwindows-mobile

am trying Https ssl connection in my C# application…i am getting
"Unable to read transport connection" for the line
WebResponse response = (HttpWebResponse)request.GetResponse();

I am forcing Certificate to be accepted
ServicePointManager.CertificatePolicy = new MyPolicy();

public class MyPolicy : ICertificatePolicy {

public bool CheckValidationResult(ServicePoint sp, X509Certificate cert, WebRequest req, int problem)
{
return true;

}

}
Working fine in WM5

may i plz know the wat is goin wrong?plz
thanks in advance