Index: filefield_field.inc
===================================================================
RCS file: /cvs/drupal-contrib/contributions/modules/filefield/filefield_field.inc,v
retrieving revision 1.20
diff -u -r1.20 filefield_field.inc
--- filefield_field.inc	19 Mar 2009 03:43:37 -0000	1.20
+++ filefield_field.inc	20 Mar 2009 01:18:21 -0000
@@ -91,6 +91,12 @@
     }
     else {
       $item['data'] = unserialize($item['data']);
+      // Temporary fix to unserialize data serialized multiple times.
+      // See the FileField issue http://drupal.org/node/402860.
+      // And the CCK issue http://drupal.org/node/407446.
+      while (!empty($item['data']) && is_string($item['data'])) {
+        $item['data'] = unserialize($item['data']);
+      }
       $items[$delta] = array_merge($item, $file);
     }
   }