Index: /CKEditor/trunk/_source/core/dom/element.js
===================================================================
--- /CKEditor/trunk/_source/core/dom/element.js	(revision 3415)
+++ /CKEditor/trunk/_source/core/dom/element.js	(revision 3416)
@@ -336,5 +336,9 @@
 		{
 			if ( this.$.outerHTML )
-				return this.$.outerHTML;
+			{
+				// IE includes the <?xml:namespace> tag in the outerHTML of
+				// namespaced element. So, we must strip it here. (#3341)
+				return this.$.outerHTML.replace( /<\?[^>]*>/, '' );
+			}
 
 			var tmpDiv = this.$.ownerDocument.createElement( 'div' );