diff --git a/checkin_notes b/checkin_notes
index c48b16acd5..b0204277dc 100755
--- a/checkin_notes
+++ b/checkin_notes
@@ -7030,3 +7030,11 @@ Rom    24 May 2005
     clientgui/
          BOINCGUIApp.cpp
          MainFrame.cpp, .h
+
+Rom    24 May 2005
+    - Throttle back how often the UI is aloud to update itself to two times
+        a second, the Mac was consuming 12% of the CPU just processing events
+        in the BOINC Manager
+
+    clientgui/
+        MainFrame.cpp
diff --git a/clientgui/MainFrame.cpp b/clientgui/MainFrame.cpp
index 628919f8cc..4e12535255 100644
--- a/clientgui/MainFrame.cpp
+++ b/clientgui/MainFrame.cpp
@@ -220,6 +220,11 @@ CMainFrame::CMainFrame(wxString strTitle) :
 
     SetStatusBarPane(0);
 
+    // Limit the number of times the UI can update itself to two times a second
+    //   NOTE: Linux and Mac were updating several times a second and eating
+    //         CPU time
+    wxUpdateUIEvent::SetUpdateInterval(500);
+
     // The second half of the initialization process picks up in the OnFrameRender()
     //   routine since the menus' and status bars' are drawn in the frameworks
     //   on idle routines, on idle events are sent in between the end of the