diff --git a/AppKit/CPMenu/CPMenu.j b/AppKit/CPMenu/CPMenu.j
index 059c918b7..b5cf9a850 100644
--- a/AppKit/CPMenu/CPMenu.j
+++ b/AppKit/CPMenu/CPMenu.j
@@ -536,7 +536,6 @@ var _CPMenuBarVisible               = NO,
 */
 - (void)submenuAction:(id)aSender
 {
-
 }
 
 /*!
@@ -584,11 +583,30 @@ var _CPMenuBarVisible               = NO,
 }
 
 /*!
-    Not implemented.
+    Enables or disables the receiver’s menu items.
+    If the target does not implement the menu item's action method the item is disabled.
+    If the target responsds to selector validateMenuItem: or validateUserInterfaceItem: (in that order) the return value is used.
 */
 - (void)update
 {
+    if (![self autoenablesItems])
+        return;
 
+    var items = [self itemArray];
+    for (var i = 0; i < [items count]; i++)
+    {
+        var item = [items objectAtIndex:i],
+            validator = [CPApp targetForAction:[item action] to:[item target] from:item];
+
+        if (!validator || ![validator respondsToSelector:[item action]])
+            [item _setEnabled:NO];
+        else if ([validator respondsToSelector:@selector(validateMenuItem:)])
+            [item _setEnabled:[validator validateMenuItem:item]];
+        else if ([validator respondsToSelector:@selector(validateUserInterfaceItem:)])
+            [item _setEnabled:[validator validateUserInterfaceItem:item]];
+    }
+
+    [[_menuWindow _menuView] tile];
 }
 
 // Managing the Title
@@ -1100,6 +1118,8 @@ var CPMenuTitleKey              = @"CPMenuTitleKey",
 
         _showsStateColumn = ![aCoder containsValueForKey:CPMenuShowsStateColumnKey] || [aCoder decodeBoolForKey:CPMenuShowsStateColumnKey];
 
+        _autoenablesItems = YES;
+
         [self setMinimumWidth:0];
     }
 
diff --git a/AppKit/CPMenu/_CPMenuManager.j b/AppKit/CPMenu/_CPMenuManager.j
index a95bc5fba..15af786fb 100644
--- a/AppKit/CPMenu/_CPMenuManager.j
+++ b/AppKit/CPMenu/_CPMenuManager.j
@@ -243,9 +243,15 @@ var STICKY_TIME_INTERVAL            = 500,
             // Close the current menu item because we are going to select a new one after a short delay
             [self showMenu:nil fromMenu:activeMenu atPoint:CGPointMakeZero()];
 
-            _showTimerID = setTimeout(function() {
+
+            if (![activeMenuContainer isMenuBar])
+            {
+                _showTimerID = setTimeout(function() {
+                    [self showMenu:[activeItem submenu] fromMenu:[activeItem menu] atPoint:newMenuOrigin];
+                }, 250);
+            }
+            else
                 [self showMenu:[activeItem submenu] fromMenu:[activeItem menu] atPoint:newMenuOrigin];
-            }, 250);
         }
     }
 
diff --git a/AppKit/CPMenu/_CPMenuWindow.j b/AppKit/CPMenu/_CPMenuWindow.j
index cb52e9822..053d493d8 100644
--- a/AppKit/CPMenu/_CPMenuWindow.j
+++ b/AppKit/CPMenu/_CPMenuWindow.j
@@ -208,8 +208,14 @@ var STICKY_TIME_INTERVAL        = 500,
     return [_menuView menu];
 }
 
+- (_CPMenuView)_menuView
+{
+    return _menuView;
+}
+
 - (void)orderFront:(id)aSender
 {
+    [[self menu] update];
     [self setFrame:_unconstrainedFrame];
 
     [super orderFront:aSender];
diff --git a/AppKit/CPMenuItem/CPMenuItem.j b/AppKit/CPMenuItem/CPMenuItem.j
index e0dcd305e..fd8f117db 100644
--- a/AppKit/CPMenuItem/CPMenuItem.j
+++ b/AppKit/CPMenuItem/CPMenuItem.j
@@ -133,10 +133,17 @@
     if ([_menu autoenablesItems])
         return;
 
-    _isEnabled = isEnabled;
+    [self _setEnabled:isEnabled];
+}
+
+- (void)_setEnabled:(BOOL)isEnabled
+{
+    if (_isEnabled === isEnabled)
+        return;
+
+    _isEnabled = !!isEnabled;
 
     [_menuItemView setDirty];
-
     [_menu itemChanged:self];
 }
 
@@ -851,6 +858,11 @@ CPControlKeyMask
     return ![self submenu] && [self menu] === [CPApp mainMenu];
 }
 
+- (CPString)description
+{
+    return [super description] + @" target: " + [self target] + @" action: " + CPStringFromSelector([self action]);
+}
+
 @end
 
 var CPMenuItemIsSeparatorKey                = @"CPMenuItemIsSeparatorKey",
diff --git a/AppKit/Cib/CPCibControlConnector.j b/AppKit/Cib/CPCibControlConnector.j
index 68934e572..ddb64d8c3 100644
--- a/AppKit/Cib/CPCibControlConnector.j
+++ b/AppKit/Cib/CPCibControlConnector.j
@@ -47,12 +47,8 @@
 
     // If the destination doesn't respond to this selector, warn but don't die.
     if (_destination && ![_destination respondsToSelector:selector])
-    {
         CPLog.warn(@"Could not connect the action " + selector + @" to target of class " + [_destination className]);
 
-        return;
-    }
-
     // Not being able to set the action is a fatal error.
     if ([_source respondsToSelector:@selector(setAction:)])
         objj_msgSend(_source, @selector(setAction:), selector);
diff --git a/Tests/AppKit/CPMenuValidatedUserInterfaceItemTest.j b/Tests/AppKit/CPMenuValidatedUserInterfaceItemTest.j
new file mode 100644
index 000000000..e4fbb2115
--- /dev/null
+++ b/Tests/AppKit/CPMenuValidatedUserInterfaceItemTest.j
@@ -0,0 +1,52 @@
+@implementation CPMenuValidatedUserInterfaceItemTest : OJTestCase
+{
+    CPMenu                          _menu @accessors(property=menu);
+}
+
+- (void)setUp
+{
+    [[CPApplication sharedApplication] setDelegate:[[MenuTarget alloc] init]];
+
+    _menu = [[CPMenu alloc] init];
+
+    [_menu addItem:[[CPMenuItem alloc] initWithTitle:@"implemented" action:@selector(implementedAction:) keyEquivalent:nil]];
+    [_menu addItem:[[CPMenuItem alloc] initWithTitle:@"disabled" action:@selector(disabledAction:) keyEquivalent:nil]];
+    [_menu addItem:[[CPMenuItem alloc] initWithTitle:@"unimplemented" action:@selector(unimplementedAction:) keyEquivalent:nil]];
+}
+
+- (void)testAutoenable
+{
+    // Update is what actually performs the autoenabling so we need to call it manually.
+    // It's normally called automatically just before a menu becomes visible.
+    [[self menu] update];
+
+    [self assertTrue:[[[self menu] itemWithTitle:@"implemented"] isEnabled] message:@"The implemented action should be enabled"];
+    [self assertFalse:[[[self menu] itemWithTitle:@"disabled"] isEnabled] message:@"The disbabled action should be disabled"];
+    [self assertFalse:[[[self menu] itemWithTitle:@"unimplemented"] isEnabled] message:@"The unimplemented action should be disabled"];
+}
+
+@end
+
+@implementation MenuTarget : CPObject
+{
+}
+
+- (BOOL)validateMenuItem:(CPMenuItem)theMenuItem
+{
+    if ([theMenuItem action] === @selector(disabledAction:))
+        return NO;
+
+    return YES;
+}
+
+- (@action)implementedAction:(id)theSender
+{
+
+}
+
+- (@action)disabledAction:(id)theSender
+{
+
+}
+
+@end
\ No newline at end of file