[C#] AutoResetEvent Freezing application!

[litewarez]

Ok does some testing and still not working, it seems to be the callback

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Windows.Forms;
using System.Net;
using System.Net.NetworkInformation;
using System.Threading;

namespace SimplePinger
{
    public partial class Form1 : Form
    {
        #region Variables

        int PingAmount = 5;
        Ping pingSender = new Ping();
        PingOptions options = new PingOptions(64, true);
        byte[] buffer = new byte[32];

        #endregion

        public Form1()
        {
            InitializeComponent();
            updatePingValue(5); //Set defualt to 5

            /*Ping Options*/
            pingSender.PingCompleted += new PingCompletedEventHandler(PingCallback);
        }

        private void PingTimes_Scroll(object sender, EventArgs e)
        {
            updatePingValue(PingTimes.Value);
        }

        private void updatePingValue(int Value)
        {
            PingAmount = PingTimes.Value;
            PingAmountLabel.Text = "Pings to send: " + PingAmount;
        }

        private void startPing_Click(object sender, EventArgs e)
        {
            outputBox.Clear(); /*Fine Here*/
            /*
             * Start the thread to run the InitiateThreadPinger()
             */
            new Thread(InitiateThreadPinger).Start();
        }

        public void InitiateThreadPinger()
        {
            /*
             * Loop 1-10 and run a ping on the host
             */
            options.DontFragment = true;
            for (int i = 0; i <= PingAmount; i++)
            {
                /*
                 * Send the pingSender the Send command with options, Callback attached in Main()
                 * The code in here Executes the correct amount of times as i get the Test below
                 * The problem seems to be that the ping does not execute the callback, Cross Thread Maybe ? ( NO Error Triggered )
                 */
                //MessageBox.Show("Test");
                pingSender.Send("127.0.0.1", 120, buffer, options);
            }
        }

        public void PingCallback(object sender, PingCompletedEventArgs e)
        {
            if (e.Cancelled)
            {
                EnableFormElements();
            }
            if (e.Error != null)
            {
                MessageBox.Show("Ping Failed:" + e.Error.ToString());
                return;
            }

            PingReply reply = e.Reply;
            AddCallbackToForm(reply);
        }

        public void AddCallbackToForm(PingReply Reply)
        {
            if (Reply == null)
            {
                return;
            }
            if (Reply.Status == IPStatus.Success)
            {
                outputBox.Text += "Success: " + Reply.Address + " - " + Reply.RoundtripTime + "ms";
            }
            else 
            {
                outputBox.Text += "Failed...";
            }
        }

        public void EnableFormElements()
        {
            startPing.Enabled = true;
            PingTimes.Enabled = true;
        }

        public void DisableFormElements()
        {
            startPing.Enabled = false;
            PingTimes.Enabled = false;
        }

        private void Form1_Load(object sender, EventArgs e)
        {

        }
    }
} 

ive left some comments in there and filtered it down to the callback i get no errors so its hard for me to track