diff -r 70d0c3102424 -r 411b72b73d8f GUI/MainForm.cs
--- a/GUI/MainForm.cs	Thu May 06 19:20:38 2010 +0000
+++ b/GUI/MainForm.cs	Sun May 09 16:22:13 2010 +0000
@@ -60,6 +60,8 @@
     private SensorSystemTray sensorSystemTray;
     private NotifyIcon notifyIcon;
     private StartupManager startupManager = new StartupManager();
+    private SensorProperties sensorProperties = new SensorProperties();
+    private UpdateVisitor updateVisitor = new UpdateVisitor();
 
     public MainForm() {      
       InitializeComponent();
@@ -241,7 +243,7 @@
     }
 
     private void timer_Tick(object sender, EventArgs e) {
-      computer.Update();  
+      computer.Accept(updateVisitor);
       treeView.Invalidate();
       plotPanel.Invalidate();
       sensorSystemTray.Redraw();