PictureBox.FromStream has some lag?

[jduncanator]

Hey guys,

I have a program that downloads a picture from a website and stores it as a stream.

public void UpdateGGImagesManager(int GateID, PictureBox pbox)
        {
            Thread a = new Thread(() => UpdateGGImages(GateID, pbox));
            a.IsBackground = true;
            a.Start();
        }
 
public void UpdateGGImages(int GateID, PictureBox pbox)
        {
            try
            {
                    WebRequest request = WebRequest.Create("http://" + server + ".darkorbit.bigpoint.com/jumpgate.php?userID=" + uid + "&gateID=" + GateID + "&type=full");
                    WebResponse webresponse = request.GetResponse();
                    Stream responseStream = webresponse.GetResponseStream();
                    UpdatePictureBox(responseStream, pbox);
            }
            catch (Exception)
            {
            }
        }

Thats the main code. It is then called later like this:

....
case "4":
            {
                       if (root.Element("item").Attribute("duplicate") != null)
                       {
                               output = output + Convert.ToChar(948).ToString() + " gate (Multiplier Received)";
                       }
                       else
                       {
                              output = output + Convert.ToChar(948).ToString() + " gate";
                              ggcomplete[3][0] = Convert.ToInt32(root.Element("item").Attribute("current").Value);
                              UpdateGGImagesManager(4, pictureBox4);
                       }
                       break;
            }
....

When the thread runs, even though it is running on another thread, the GUI locks up for about a second. This means I can narrow it down to the Invoke on the main thread, meaning that the PictureBox.FromStream method generates a bit of lag??

Is this right or what the heck is goin on?

Thanks,
Josh