? empty_title.patch
Index: link.module
===================================================================
RCS file: /cvs/drupal-contrib/contributions/modules/link/link.module,v
retrieving revision 1.25.2.3
diff -u -p -r1.25.2.3 link.module
--- link.module	18 Oct 2010 03:46:47 -0000	1.25.2.3
+++ link.module	28 Oct 2010 16:18:11 -0000
@@ -503,7 +503,7 @@ function _link_sanitize(&$item, $delta, 
     $item['title'] = $field['settings']['title_value'];
   }
   // Use the title defined by the user at the widget level.
-  else {
+  elseif (isset($item['title'])) {
     $title = $item['title'];
   }
   // Replace tokens.