Pobranie skróconego linku

Witam
mam taką problem :

Poniżej funkcja która skraca link

public string ToKutAs(string url)
        {
            string adres = "http://kut.as/url/" + url;
            CookieCollection cookies = this.GetCookies(adres);
            HttpWebRequest request = (HttpWebRequest)WebRequest.Create(adres);
            request.CookieContainer = new CookieContainer();
            request.Accept = "text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8";
            request.Method = "POST";
            request.ContentType = "application/x-www-form-urlencoded";
            request.UserAgent = "Mozilla/5.0 (Windows; U; Windows NT 6.1; pl; rv:1.9.2.3) Gecko/20100401 Firefox/3.6.3";
            request.Headers.Add(HttpRequestHeader.AcceptLanguage, "pl,en-us;q=0.7,en;q=0.3");
            request.Headers.Add(HttpRequestHeader.AcceptCharset, "utf-8");
            request.Headers.Add(HttpRequestHeader.KeepAlive, "115");
            request.KeepAlive = true;
            if (cookies != null)
            {
                request.CookieContainer.Add(cookies);
            }
            Stream requestStream = request.GetRequestStream();
            var response = request.GetResponse();
            var stream = response.GetResponseStream();
            var reader = new StreamReader(stream);
            string strona = reader.ReadToEnd();
            response.Close();
            requestStream.Close();
            reader.Close();
            return strona;
        }

i funkcja zwracająca cookies

        private CookieCollection GetCookies(string url)
        {
            SetAllowUnsafeHeaderParsing();
            HttpWebRequest request = (HttpWebRequest)WebRequest.Create(url);
            request.CookieContainer = new CookieContainer();
            HttpWebResponse response = (HttpWebResponse)request.GetResponse();
            Stream responseStream = response.GetResponseStream();
            responseStream.Close();
            return response.Cookies;
        }

i kurcze nie wiem dlaczego nie chce go skrócić (http://www.filmweb.pl/film/Wr%C3%B3g+publiczny+numer+jeden%2C+cz%C4%99%C5%9B%C4%87+I-2008-393442).

jak dam np link taki http://www.filmweb.pl/Zagubieni to skraca.
Sądzę ze ma to związek z tymi krzakami w linku.
Czy mógłby ktoś mi pomóc
Pozdrawiam
Savior

edit:
dodalem

request.Headers.Add(HttpRequestHeader.AcceptEncoding, "gzip,deflate");
request.AutomaticDecompression = DecompressionMethods.GZip | DecompressionMethods.Deflate;

na czuja myślę ze to ma związek z kodowanie gzip,deflate