Index: modules/user/user.module
===================================================================
RCS file: /cvs/drupal/drupal/modules/user/user.module,v
retrieving revision 1.1131
diff -u -p -r1.1131 user.module
--- modules/user/user.module	2 Mar 2010 09:12:31 -0000	1.1131
+++ modules/user/user.module	4 Mar 2010 06:02:49 -0000
@@ -390,7 +390,7 @@ function user_save($account, $edit = arr
         // Form fields that don't pertain to the users, user_roles, or
         // Field API are automatically serialized into the users.data
         // column.
-        if (!in_array($key, array('roles', 'is_new')) && empty($user_fields[$key]) && empty($field_names[$key])) {
+        if (!in_array($key, array('roles', 'is_new', 'current_pass_required_values', 'current_pass')) && empty($user_fields[$key]) && empty($field_names[$key])) {
           if ($value === NULL) {
             unset($data[$key]);
           }