diff --git a/clientgui/AdvancedFrame.cpp b/clientgui/AdvancedFrame.cpp
index bd9974d58c..d4bb090bbe 100644
--- a/clientgui/AdvancedFrame.cpp
+++ b/clientgui/AdvancedFrame.cpp
@@ -1014,10 +1014,9 @@ void CAdvancedFrame::SaveWindowDimensions() {
 #ifdef __WXMAC__
     // We don't call Hide() or Show(false) for the main frame
     // under wxCocoa 2.9.5 because it bounces the Dock icon
-    // (as in notification.)  We work around this by moving
-    // the main window/frame off screen when displaying the
-    // CDlgAbout modal dialog while the main window is hidden
-    // by CTaskBarIcon::OnAbout().
+    // (as in notification) when we click on our menu bar icon.
+    // We work around this by moving the main window/frame off
+    // screen when needed.
     pos = GetOnScreenFramePosition();
 #endif
 
diff --git a/clientgui/BOINCBaseFrame.cpp b/clientgui/BOINCBaseFrame.cpp
index a008483367..9918bb92ff 100644
--- a/clientgui/BOINCBaseFrame.cpp
+++ b/clientgui/BOINCBaseFrame.cpp
@@ -319,6 +319,7 @@ void CBOINCBaseFrame::OnClose(wxCloseEvent& event) {
 #elif defined(__WXMAC__)
         // Don't call Hide() or Show(false) under wxCocoa 2.9.5 
         // because it bounces the Dock icon (as in notification)
+        // when we click on our menu bar icon.
         wxGetApp().ShowApplication(false);
 #else
         Hide();
@@ -896,8 +897,9 @@ bool CBOINCBaseFrame::Show(bool bShow) {
 
 // We don't call Hide() or Show(false) for the main frame
 // under wxCocoa 2.9.5 because it bounces the Dock icon
-// (as in notification.)  We work around this by moving
-// the main window/frame off screen when needed.
+// (as in notification) when we click on our menu bar icon.
+// We work around this by moving the main window/frame off
+// screen when needed.
 // The position will be restored in one of these methods:
 // CBOINCGUIApp::OnActivateApp(), CSimpleFrame::SaveState()
 // or CAdvancedFrame::SaveWindowDimensions().
diff --git a/clientgui/BOINCGUIApp.cpp b/clientgui/BOINCGUIApp.cpp
index 29b5f28137..ac356d78fa 100644
--- a/clientgui/BOINCGUIApp.cpp
+++ b/clientgui/BOINCGUIApp.cpp
@@ -470,8 +470,9 @@ bool CBOINCGUIApp::OnInit() {
 #ifdef __WXMAC__
         // We don't call Hide() or Show(false) for the main frame
         // under wxCocoa 2.9.5 because it bounces the Dock icon
-        // (as in notification.)  We work around this by moving
-        // the main window/frame off screen here.
+        // (as in notification) when we click on our menu bar icon.
+        // We work around this by moving the main window/frame off
+        // screen here.
         // The position will be restored in one of these methods:
         // CBOINCGUIApp::OnActivateApp(), CSimpleFrame::SaveState()
         // or CAdvancedFrame::SaveWindowDimensions().
@@ -479,6 +480,8 @@ bool CBOINCGUIApp::OnInit() {
             m_pFrame->MoveFrameOffScreen();
             m_pFrame->Show();
         }
+        // Force BOINC Manager to background (needed on OS 10.9)
+        system("osascript -e 'tell application \"Finder\" to activate'");
 #endif
         ShowApplication(false);
 	}
@@ -839,10 +842,9 @@ void CBOINCGUIApp::OnActivateApp(wxActivateEvent& event) {
 #ifdef __WXMAC__
     // We don't call Hide() or Show(false) for the main frame
     // under wxCocoa 2.9.5 because it bounces the Dock icon
-    // (as in notification.)  We work around this by moving
-    // the main window/frame off screen when displaying the
-    // CDlgAbout modal dialog while the main window is hidden
-    // by CTaskBarIcon::OnAbout().
+    // (as in notification) when we click on our menu bar icon.
+    // We work around this by moving the main window/frame off
+    // screen when needed.
     if (m_pFrame) {
         if (event.GetActive()) {
             if (!m_bAboutDialogIsOpen) {
diff --git a/clientgui/BOINCTaskBar.cpp b/clientgui/BOINCTaskBar.cpp
index 591e05fa77..a792e0a6f6 100644
--- a/clientgui/BOINCTaskBar.cpp
+++ b/clientgui/BOINCTaskBar.cpp
@@ -259,9 +259,10 @@ void CTaskBarIcon::OnAbout(wxCommandEvent& WXUNUSED(event)) {
     
     // We don't call Hide() or Show(false) for the main frame
     // under wxCocoa 2.9.5 because it bounces the Dock icon
-    // (as in notification.)  We work around this by moving
-    // the main window/frame off screen when displaying the
-    // CDlgAbout modal dialog while the main window is hidden.
+    // (as in notification) when we click on our menu bar icon.
+    // We work around this by moving the main window/frame off
+    // screen when displaying the CDlgAbout modal dialog while
+    // the main window is hidden.
     // The position will be restored in one of these methods:
     // CBOINCGUIApp::OnActivateApp(), CSimpleFrame::SaveState()
     // or CAdvancedFrame::SaveWindowDimensions().
diff --git a/clientgui/sg_BoincSimpleFrame.cpp b/clientgui/sg_BoincSimpleFrame.cpp
index 17107e116a..887cf7cd49 100755
--- a/clientgui/sg_BoincSimpleFrame.cpp
+++ b/clientgui/sg_BoincSimpleFrame.cpp
@@ -321,10 +321,12 @@ bool CSimpleFrame::SaveState() {
 #ifdef __WXMAC__
     // We don't call Hide() or Show(false) for the main frame
     // under wxCocoa 2.9.5 because it bounces the Dock icon
-    // (as in notification.)  We work around this by moving
-    // the main window/frame off screen when displaying the
-    // CDlgAbout modal dialog while the main window is hidden
-    // by CTaskBarIcon::OnAbout().
+    // (as in notification) when we click on our menu bar icon.
+    // We work around this by moving the main window/frame off
+    // screen when needed.
+    // The position will be restored in one of these methods:
+    // CBOINCGUIApp::OnActivateApp(), CSimpleFrame::SaveState()
+    // or CAdvancedFrame::SaveWindowDimensions().
     pos = GetOnScreenFramePosition();
 #endif