Beginner's Guide to Threading in .NET: Part 3 of n

using System;
using System.Threading;

namespace MutexTest
{
    class Program
    {
        //start out with un-owned mutex
        static Mutex mutex = new Mutex(false,"MutexTest");


        static void Main(string[] args)
        {
            //check to see if there is another instance, allow 5 secs
            //another instance may be in process of closing right now
            if(!mutex.WaitOne(TimeSpan.FromSeconds(5)))
            {
                Console.WriteLine("MutexTest already running! Exiting");
                return;
            }
            try
            {
                Console.WriteLine("MutexTest Started");
                Console.ReadLine();
            }
            finally
            {
                //release the mutx to allow, possible future instance to run
                mutex.ReleaseMutex();
            }
        }
    }
}