diff --git a/includes/common.inc b/includes/common.inc
index 34fa9b9..c39d543 100644
--- a/includes/common.inc
+++ b/includes/common.inc
@@ -897,13 +897,6 @@ function drupal_http_request($url, array $options = array()) {
     // clash with the HTTP status codes.
     $result->code = -$errno;
     $result->error = trim($errstr) ? trim($errstr) : t('Error opening socket @socket', array('@socket' => $socket));
-
-    // Mark that this request failed. This will trigger a check of the web
-    // server's ability to make outgoing HTTP requests the next time that
-    // requirements checking is performed.
-    // See system_requirements().
-    variable_set('drupal_http_request_fails', TRUE);
-
     return $result;
   }
 
@@ -5079,6 +5072,9 @@ function drupal_build_js_cache($files) {
  */
 function drupal_clear_js_cache() {
   variable_del('javascript_parsed');
+  variable_del('locale_js_files');
+  $dir = 'public://' . variable_get('locale_js_directory', 'languages');
+  file_unmanaged_delete_recursive($dir);
   variable_del('drupal_js_cache_files');
   file_scan_directory('public://js', '/.*/', array('callback' => 'drupal_delete_file_if_stale'));
 }
diff --git a/includes/locale.inc b/includes/locale.inc
index 82c55e5..a43a068 100644
--- a/includes/locale.inc
+++ b/includes/locale.inc
@@ -597,7 +597,7 @@ function locale_add_language($langcode, $name = NULL, $native = NULL, $direction
   drupal_static_reset('language_list');
 
   // Force JavaScript translation file creation for the newly added language.
-  _locale_invalidate_js($langcode);
+  _locale_rebuild_js($langcode);
 
   watchdog('locale', 'The %language language (%code) has been created.', array('%language' => $name, '%code' => $langcode));
 
@@ -655,7 +655,7 @@ function _locale_import_po($file, $langcode, $mode, $group = NULL) {
   }
 
   // Clear cache and force refresh of JavaScript translations.
-  _locale_invalidate_js($langcode);
+  _locale_rebuild_js($langcode);
   cache_clear_all('locale:', 'cache', TRUE);
 
   // Rebuild the menu, strings may have changed.
@@ -1961,40 +1961,6 @@ function _locale_translate_seek_query() {
 }
 
 /**
- * Force the JavaScript translation file(s) to be refreshed.
- *
- * This function sets a refresh flag for a specified language, or all
- * languages except English, if none specified. JavaScript translation
- * files are rebuilt (with locale_update_js_files()) the next time a
- * request is served in that language.
- *
- * @param $langcode
- *   The language code for which the file needs to be refreshed.
- *
- * @return
- *   New content of the 'javascript_parsed' variable.
- */
-function _locale_invalidate_js($langcode = NULL) {
-  $parsed = variable_get('javascript_parsed', array());
-
-  if (empty($langcode)) {
-    // Invalidate all languages.
-    $languages = language_list();
-    unset($languages['en']);
-    foreach ($languages as $lcode => $data) {
-      $parsed['refresh:' . $lcode] = 'waiting';
-    }
-  }
-  else {
-    // Invalidate single language.
-    $parsed['refresh:' . $langcode] = 'waiting';
-  }
-
-  variable_set('javascript_parsed', $parsed);
-  return $parsed;
-}
-
-/**
  * (Re-)Creates the JavaScript translation file for a language.
  *
  * @param $language
@@ -2077,6 +2043,10 @@ function _locale_rebuild_js($langcode = NULL) {
       $status = 'error';
     }
   }
+  if (!$data && $changed_hash) {
+    $language->javascript = FALSE;
+    $status = 'deleted';
+  }
 
   // Save the new JavaScript hash (or an empty value if the file just got
   // deleted). Act only if some operation was executed that changed the hash
diff --git a/modules/locale/locale.admin.inc b/modules/locale/locale.admin.inc
index e813962..58da7a5 100644
--- a/modules/locale/locale.admin.inc
+++ b/modules/locale/locale.admin.inc
@@ -1220,15 +1220,12 @@ function locale_translate_edit_form_submit($form, &$form_state) {
         ->condition('language', $key)
         ->execute();
     }
-
-    // Force JavaScript translation file recreation for this language.
-    _locale_invalidate_js($key);
   }
 
   drupal_set_message(t('The string has been saved.'));
 
-  // Clear locale cache.
-  _locale_invalidate_js();
+  // Clear locale cache and rebuild JavaScript translations.
+  _locale_rebuild_js();
   cache_clear_all('locale:', 'cache', TRUE);
 
   $form_state['redirect'] = 'admin/config/regional/translate/translate';
@@ -1264,7 +1261,7 @@ function locale_translate_delete_form_submit($form, &$form_state) {
     ->condition('lid', $form_state['values']['lid'])
     ->execute();
   // Force JavaScript translation file recreation for all languages.
-  _locale_invalidate_js();
+  _locale_rebuild_js();
   cache_clear_all('locale:', 'cache', TRUE);
   drupal_set_message(t('The string has been removed.'));
   $form_state['redirect'] = 'admin/config/regional/translate/translate';
diff --git a/modules/locale/locale.module b/modules/locale/locale.module
index 768fead..0a2d587 100644
--- a/modules/locale/locale.module
+++ b/modules/locale/locale.module
@@ -922,34 +922,26 @@ function locale_js_alter(&$javascript) {
     }
   }
 
-  // If there are any new source files we parsed, invalidate existing
-  // JavaScript translation files for all languages, adding the refresh
-  // flags into the existing array.
+  // If there are any new source files we parsed, store them so that they will
+  // not be parsed on the next request.
   if ($new_files) {
-    $parsed += _locale_invalidate_js();
-  }
-
-  // If necessary, rebuild the translation file for the current language.
-  if (!empty($parsed['refresh:' . $language->language])) {
-    // Don't clear the refresh flag on failure, so that another try will
-    // be performed later.
-    if (_locale_rebuild_js()) {
-      unset($parsed['refresh:' . $language->language]);
-    }
-    // Store any changes after refresh was attempted.
-    variable_set('javascript_parsed', $parsed);
-  }
-  // If no refresh was attempted, but we have new source files, we need
-  // to store them too. This occurs if current page is in English.
-  elseif ($new_files) {
     variable_set('javascript_parsed', $parsed);
   }
-
-  // Add the translation JavaScript file to the page.
-  if ($files && !empty($language->javascript)) {
+  // Translate JavaScript files for non-English.
+  if ($language->language != 'en') {
+    // If there has not been an attempt to generate a JavaScript file, try now.
+    if ($language->javascript === '') {
+      _locale_rebuild_js($language->language);
+    }
     // Add the translation JavaScript file to the page.
-    $file = $dir . '/' . $language->language . '_' . $language->javascript . '.js';
-    $javascript[$file] = drupal_js_defaults($file);
+    if ($files && !empty($language->javascript)) {
+      // Add the translation JavaScript file to the page.
+      $file = $dir . '/' . $language->language . '_' . $language->javascript . '.js';
+      if (!file_exists($files)) {
+        _locale_rebuild_js($language->language);
+      }
+      $javascript[$file] = drupal_js_defaults($file);
+    }
   }
 }