diff --git a/src/data.js b/src/data.js
index 1d993fe5..44d77a90 100644
--- a/src/data.js
+++ b/src/data.js
@@ -6,7 +6,19 @@ jQuery.extend({
 	
 	expando:expando,
 
+	// The following elements throw uncatchable exceptions if you
+	// attempt to add expando properties to them.
+	noData: {
+		"embed": true,
+		"object": true,
+		"applet": true
+	},
+
 	data: function( elem, name, data ) {
+		if ( jQuery.noData[elem.nodeNode.toLowerCase()] ) {
+			return;
+		}
+
 		elem = elem == window ?
 			windowData :
 			elem;
@@ -43,6 +55,10 @@ jQuery.extend({
 	},
 
 	removeData: function( elem, name ) {
+		if ( jQuery.noData[elem.nodeNode.toLowerCase()] ) {
+			return;
+		}
+
 		elem = elem == window ?
 			windowData :
 			elem;
diff --git a/src/manipulation.js b/src/manipulation.js
index a8cb484b..e1657a8c 100644
--- a/src/manipulation.js
+++ b/src/manipulation.js
@@ -463,7 +463,7 @@ jQuery.extend({
 
 function cleanData( elems ) {
 	for ( var i = 0, elem, id; (elem = elems[i]) != null; i++ ) {
-		if ( (id = elem[expando]) ) {
+		if ( !jQuery.noData[elem.nodeNode.toLowerCase()] && (id = elem[expando]) ) {
 			delete jQuery.cache[ id ];
 		}
 	}