diff -r 5a16d2992112 Lib/idlelib/Bindings.py
--- a/Lib/idlelib/Bindings.py	Mon Apr 15 21:55:14 2013 +0200
+++ b/Lib/idlelib/Bindings.py	Wed Apr 17 05:10:39 2013 -0300
@@ -98,6 +98,10 @@
     # menu
     del menudefs[-1][1][0:2]
 
+    # Remove the 'Configure' entry from the options menu, it is in the
+    # application menu as 'Preferences'
+    del menudefs[-2][1][0:2]
+
 default_keydefs = idleConf.GetCurrentKeySet()
 
 del sys
diff -r 5a16d2992112 Lib/idlelib/EditorWindow.py
--- a/Lib/idlelib/EditorWindow.py	Mon Apr 15 21:55:14 2013 +0200
+++ b/Lib/idlelib/EditorWindow.py	Wed Apr 17 05:10:39 2013 -0300
@@ -434,9 +434,8 @@
     ]
 
     if macosxSupport.runningAsOSXApp():
-        del menu_specs[-3]
         menu_specs[-2] = ("windows", "_Window")
-
+        
 
     def createmenubar(self):
         mbar = self.menubar