diff --git a/UICatalog/Program.cs b/UICatalog/Program.cs
index f81df07df..17315ac5f 100644
--- a/UICatalog/Program.cs
+++ b/UICatalog/Program.cs
@@ -62,7 +62,7 @@ namespace UICatalog {
 				new MenuBarItem ("_File", new MenuItem [] {
 					new MenuItem ("_Quit", "", () => Application.RequestStop() )
 				}),
-				new MenuBarItem ("_About...", "About this app", () =>  MessageBox.Query (0, 6, "About UI Catalog", "UI Catalog is a comprehensive sample library for Terminal.Gui", "Ok")),
+				new MenuBarItem ("_About...", "About this app", () =>  MessageBox.Query (0, 10, "About UI Catalog", "UI Catalog is a comprehensive sample library for Terminal.Gui", "Ok")),
 			});
 
 			_leftPane = new Window ("Categories") {
diff --git a/UICatalog/README.md b/UICatalog/README.md
index 6f6b019f8..49eebf94c 100644
--- a/UICatalog/README.md
+++ b/UICatalog/README.md
@@ -119,4 +119,4 @@ For complete control, the `Init` and `Run` overrides can be implemented. The `ba
 - Use the `Bug Rero` Category for `Scnarios` that reproduce bugs. 
 	- Include the Github Issue # in the Description.
 	- Once the bug has been fixed in `master` submit another PR to remove the `Scenario` (or modify it to provide a good regression test).
-- Tag bugs or suggestions for `UI Catalog` in the main `Terminal.Gui` Github Issues with "UICatalog: ".
\ No newline at end of file
+- Tag bugs or suggestions for `UI Catalog` as [`Terminal.Gui` Github Issues](https://github.com/migueldeicaza/gui.cs/issues) with "UICatalog: ".
\ No newline at end of file
diff --git a/UICatalog/Scenario.cs b/UICatalog/Scenario.cs
index e491a4c8e..b43821a4e 100644
--- a/UICatalog/Scenario.cs
+++ b/UICatalog/Scenario.cs
@@ -17,7 +17,9 @@ namespace UICatalog {
 	/// The Main program uses reflection to find all sceanarios and adds them to the
 	/// ListViews. Press ENTER to run the selected sceanrio. Press CTRL-Q to exit it.
 	/// </summary>
-	public class Scenario {
+	public class Scenario : IDisposable {
+		private bool _disposedValue;
+
 		/// <summary>
 		/// The Top level for the Scenario. This should be set to `Application.Top` in most cases.
 		/// </summary>
@@ -177,5 +179,25 @@ namespace UICatalog {
 			}
 			return objects;
 		}
+
+		protected virtual void Dispose (bool disposing)
+		{
+			if (!_disposedValue) {
+				if (disposing) {
+					// TODO: dispose managed state (managed objects)
+				}
+
+				// TODO: free unmanaged resources (unmanaged objects) and override finalizer
+				// TODO: set large fields to null
+				_disposedValue = true;
+			}
+		}
+
+		public void Dispose ()
+		{
+			// Do not change this code. Put cleanup code in 'Dispose(bool disposing)' method
+			Dispose (disposing: true);
+			GC.SuppressFinalize (this);
+		}
 	}
 }
diff --git a/UICatalog/Scenarios/Progress.cs b/UICatalog/Scenarios/Progress.cs
index 082d0590a..55ceeef16 100644
--- a/UICatalog/Scenarios/Progress.cs
+++ b/UICatalog/Scenarios/Progress.cs
@@ -1,4 +1,5 @@
 using System;
+using System.Threading;
 using Terminal.Gui;
 
 namespace UICatalog {
@@ -11,6 +12,8 @@ namespace UICatalog {
 
 		private ProgressBar _activityProgressBar;
 		private ProgressBar _pulseProgressBar;
+		private Timer _timer;
+
 		public override void Setup ()
 		{
 			Win.Add (new Button ("Start") {
@@ -50,24 +53,40 @@ namespace UICatalog {
 			Win.Add (_pulseProgressBar);
 		}
 
+		protected override void Dispose (bool disposing)
+		{
+			_timer?.Dispose ();
+			_timer = null;
+			base.Dispose (disposing);
+		}
+
 		private void Pulse ()
 		{
-			if (_activityProgressBar.Fraction + 0.1F >= 1) {
+			if (_activityProgressBar.Fraction + 0.01F >= 1) {
 				_activityProgressBar.Fraction = 0F;
 			} else {
-				_activityProgressBar.Fraction += 0.1F;
+				_activityProgressBar.Fraction += 0.01F;
 			}
 			_pulseProgressBar.Pulse ();
+			
 		}
 
 		private void Start ()
 		{
+			_timer?.Dispose ();
+			_timer = null;
+
 			_activityProgressBar.Fraction = 0F;
 			_pulseProgressBar.Fraction = 0F;
+
+			_timer = new Timer ((o) => Application.MainLoop.Invoke (() => Pulse ()), null, 0, 250);
 		}
 
 		private void Stop ()
 		{
+			_timer?.Dispose ();
+			_timer = null;
+
 			_activityProgressBar.Fraction = 1F;
 			_pulseProgressBar.Fraction = 1F;
 		}
diff --git a/UICatalog/screenshot.png b/UICatalog/screenshot.png
index 093c770e3..c81878bf2 100644
Binary files a/UICatalog/screenshot.png and b/UICatalog/screenshot.png differ