Index: wp-includes/taxonomy.php
===================================================================
--- wp-includes/taxonomy.php	(revision 15489)
+++ wp-includes/taxonomy.php	(working copy)
@@ -1410,6 +1410,7 @@
 
 /**
  * Retrieves the terms associated with the given object(s), in the supplied taxonomies.
+ * May return duplicate terms.
  *
  * The following information has to do the $args parameter and for what can be
  * contained in the string or array of that parameter, if it exists.