diff --git a/OnTopReplica/MainForm.cs b/OnTopReplica/MainForm.cs
index 55a1284..6a15563 100644
--- a/OnTopReplica/MainForm.cs
+++ b/OnTopReplica/MainForm.cs
@@ -203,7 +203,10 @@ namespace OnTopReplica {
 
             //ESCAPE
             else if (e.KeyCode == Keys.Escape) {
-                Console.WriteLine("Received ESC");
+
+#if DEBUG
+                Console.WriteLine("Received ESCAPE");
+#endif
 
                 //Disable click-through
                 if (ClickThroughEnabled) {
diff --git a/OnTopReplica/MessagePumpManager.cs b/OnTopReplica/MessagePumpManager.cs
index 17f0e11..b0f07da 100644
--- a/OnTopReplica/MessagePumpManager.cs
+++ b/OnTopReplica/MessagePumpManager.cs
@@ -21,7 +21,9 @@ namespace OnTopReplica {
 
                     _processors.Add(t, instance);
                     
+#if DEBUG
                     Console.WriteLine("Registered message pump processor: {0}", t);
+#endif
                 }
             }
         }
diff --git a/OnTopReplica/MessagePumpProcessors/GroupSwitchManager.cs b/OnTopReplica/MessagePumpProcessors/GroupSwitchManager.cs
index d371f85..22a40ca 100644
--- a/OnTopReplica/MessagePumpProcessors/GroupSwitchManager.cs
+++ b/OnTopReplica/MessagePumpProcessors/GroupSwitchManager.cs
@@ -26,7 +26,7 @@ namespace OnTopReplica.MessagePumpProcessors {
             //Enable new hook
             if (!_active) {
                 if (!HookMethods.RegisterShellHookWindow(Form.Handle)) {
-                    Console.WriteLine("Failed to register shell hook window.");
+                    Console.Error.WriteLine("Failed to register shell hook window.");
                     return;
                 }
             }
@@ -41,7 +41,7 @@ namespace OnTopReplica.MessagePumpProcessors {
                 return;
 
             if (!HookMethods.DeregisterShellHookWindow(Form.Handle))
-                Console.WriteLine("Failed to deregister shell hook window.");
+                Console.Error.WriteLine("Failed to deregister shell hook window.");
 
             _active = false;
         }
@@ -53,7 +53,6 @@ namespace OnTopReplica.MessagePumpProcessors {
                     hookCode == HookMethods.HSHELL_RUDEAPPACTIVATED) {
          
                     IntPtr activeHandle = msg.LParam;
-                    Console.WriteLine("New foreground: {0}", activeHandle);
                     HandleForegroundWindowChange(activeHandle);
                 }
             }
@@ -66,17 +65,27 @@ namespace OnTopReplica.MessagePumpProcessors {
                     iActive = i;
             }
 
+#if DEBUG
+            Console.Write("New active window (h {0}). ", activeWindow);
+#endif
+
             if (iActive < 0) {
+#if DEBUG
                 //new foreground window is not tracked
                 Console.WriteLine("Active window is not tracked.");
+#endif
                 return;
             }
 
             //Get new handle to clone
             int iNewToClone = (iActive + 1) % _handles.Count;
 
+#if DEBUG
             Console.WriteLine("Tracked as {0}. Switching to {1}.", iActive, iNewToClone);
+#endif
 
+
+            //TODO: use real least-recently-used semantics
             Form.SetThumbnail(_handles[iNewToClone], null);
         }