Index: wp-admin/css/nav-menus.css
===================================================================
--- wp-admin/css/nav-menus.css	(revision 46739)
+++ wp-admin/css/nav-menus.css	(working copy)
@@ -50,17 +50,10 @@
 	margin: 10px 0 0;
 }
 
-.metabox-holder-disabled .postbox,
-.metabox-holder-disabled .accordion-section-content,
-.metabox-holder-disabled .accordion-section-title {
-	opacity: 0.5;
-	filter: alpha(opacity=50);
+.metabox-holder-disabled {
+	visibility: hidden;
 }
 
-.metabox-holder-disabled .button-controls .select-all {
-	display: none;
-}
-
 #wpbody {
 	position: relative;
 }