Index: wp-admin/includes/dashboard.php
===================================================================
--- wp-admin/includes/dashboard.php	(revision 17767)
+++ wp-admin/includes/dashboard.php	(working copy)
@@ -1016,7 +1016,7 @@
  * @return bool False on failure. True on success.
  */
 function wp_dashboard_cached_rss_widget( $widget_id, $callback, $check_urls = array() ) {
-	$loading = '<p class="widget-loading">' . __( 'Loading&#8230;' ) . '</p>';
+	$loading = '<p class="widget-loading hide-if-no-js">' . __( 'Loading&#8230;' ) . '</p><p class="hide-if-js">' . __( 'This widget requires JavaScript.' ) . '</p>';
 
 	if ( empty($check_urls) ) {
 		$widgets = get_option( 'dashboard_widget_options' );