Index: includes/locale.inc
===================================================================
--- includes/locale.inc	(revision 28107)
+++ includes/locale.inc	(working copy)
@@ -846,8 +846,9 @@
  * Validate string editing form submissions.
  */
 function locale_translate_edit_form_validate($form, &$form_state) {
+  $safe_check_needed = $form_state['values']['textgroup']=='default'; // locale string check is needed for default textgroup only
   foreach ($form_state['values']['translations'] as $key => $value) {
-    if (!locale_string_is_safe($value)) {
+    if ($safe_check_needed && !locale_string_is_safe($value)) {
       form_set_error('translations', t('The submitted string contains disallowed HTML: %string', array('%string' => $value)));
       watchdog('locale', 'Attempted submission of a translation string with disallowed HTML: %string', array('%string' => $value), WATCHDOG_WARNING);
     }