Index: token.module
===================================================================
RCS file: /cvs/drupal-contrib/contributions/modules/token/token.module,v
retrieving revision 1.5.2.10
diff -u -p -r1.5.2.10 token.module
--- token.module	16 Nov 2007 22:29:40 -0000	1.5.2.10
+++ token.module	9 Jan 2008 21:30:35 -0000
@@ -216,6 +216,9 @@ function token_get_values($type = 'globa
     $tokens = array();
   }
 
+  // Ensure $object is not modified (objects are always passed by reference in PHP5)
+  $object = drupal_clone($object);
+
   // Simple recursion check. This is to avoid content_view()'s potential
   // for endless looping when a filter uses tokens, which load the content
   // view, which calls the filter, which uses tokens, which...