Index: wp-includes/class-oembed.php
===================================================================
--- wp-includes/class-oembed.php	(revision 21695)
+++ wp-includes/class-oembed.php	(working copy)
@@ -213,8 +213,13 @@
 			$errors = libxml_use_internal_errors( 'true' );
 			$data = simplexml_load_string( $response_body );
 			libxml_use_internal_errors( $errors );
-			if ( is_object( $data ) )
-				return $data;
+			if ( ! is_object( $data ) )
+				return false;
+
+			$return = new stdClass;
+			foreach ( $data as $key => $value )
+				$return->$key = (string) $value;
+			return $return;
 		}
 		return false;
 	}