diff --git a/core/includes/bootstrap.inc b/core/includes/bootstrap.inc
index c26ec86..ea1f580 100644
--- a/core/includes/bootstrap.inc
+++ b/core/includes/bootstrap.inc
@@ -205,6 +205,13 @@ const LANGUAGE_NOT_APPLICABLE = 'zxx';
  */
 const LANGUAGE_MULTIPLE = 'mul';
 
+/**
+ * The language code used when referring to all languages.
+ *
+ * @todo W3C uses this for 'Allar', need to find a better code.
+ */
+const LANGUAGE_ALL = 'all';
+
 /**
  * The type of language used to define the content language.
  */
diff --git a/core/modules/language/language.admin.inc b/core/modules/language/language.admin.inc
index 33bc147..4e4e306 100644
--- a/core/modules/language/language.admin.inc
+++ b/core/modules/language/language.admin.inc
@@ -61,17 +61,22 @@ function language_admin_overview_form($form, &$form_state) {
       '#theme_wrappers' => array('language_admin_operations'),
       '#weight' => 100,
     );
-    $form['languages'][$langcode]['operations']['edit'] = array(
-      '#type' => 'link',
-      '#title' => t('edit'),
-      '#href' => 'admin/config/regional/language/edit/' . $langcode,
-    );
-    $form['languages'][$langcode]['operations']['delete'] = array(
-      '#type' => 'link',
-      '#title' => t('delete'),
-      '#href' => 'admin/config/regional/language/delete/' . $langcode,
-      '#access' => $langcode != $default->langcode,
-    );
+    if (empty($language->locked)) {
+      $form['languages'][$langcode]['operations']['edit'] = array(
+        '#type' => 'link',
+        '#title' => t('edit'),
+        '#href' => 'admin/config/regional/language/edit/' . $langcode,
+      );
+      $form['languages'][$langcode]['operations']['delete'] = array(
+        '#type' => 'link',
+        '#title' => t('delete'),
+        '#href' => 'admin/config/regional/language/delete/' . $langcode,
+        '#access' => $langcode != $default->langcode,
+      );
+    }
+    else{
+      $form['languages'][$langcode]['default']['#disabled'] = TRUE;
+    }
   }
 
   $form['actions'] = array('#type' => 'actions');
diff --git a/core/modules/language/language.install b/core/modules/language/language.install
index ecf637d..2e0009d 100644
--- a/core/modules/language/language.install
+++ b/core/modules/language/language.install
@@ -9,8 +9,53 @@
  * Implements hook_install().
  */
 function language_install() {
+  $languages = language_special_languages();
   // Add the default language to the database too.
-  language_save(language_default());
+  $languages[] = language_default();
+  foreach ($languages as $language) {
+    language_save($language);
+  }
+}
+
+/*
+ * @see http://drupal.org/node/1471432
+ */
+function language_special_languages() {
+  $locked_language = array(
+    'default' => FALSE,
+    'locked' => TRUE,
+    'enabled' => TRUE,
+  );
+  $languages = language_list();
+  // Language list is ordered by weight, get the biggest one.
+  $keys = array_keys($languages);
+  $max_weight = $languages[array_pop($keys)]->weight;
+  $languages[LANGUAGE_SYSTEM] = (object) (array(
+    'langcode' => LANGUAGE_SYSTEM,
+    'name' => t('System (English)'),
+    'weight' => ++$max_weight,
+  ) + $locked_language);
+  $languages[LANGUAGE_NOT_SPECIFIED] = (object) (array(
+    'langcode' => LANGUAGE_NOT_SPECIFIED,
+    'name' => t('Not specified'),
+    'weight' => ++$max_weight,
+  ) + $locked_language);
+  $languages[LANGUAGE_NOT_APPLICABLE] = (object) (array(
+    'langcode' => LANGUAGE_NOT_APPLICABLE,
+    'name' => t('Not applicable'),
+    'weight' => ++$max_weight,
+  ) + $locked_language);
+  $languages[LANGUAGE_MULTIPLE] = (object) (array(
+    'langcode' => LANGUAGE_MULTIPLE,
+    'name' => t('Multiple'),
+    'weight' => ++$max_weight,
+  ) + $locked_language);
+  $languages[LANGUAGE_ALL] = (object) (array(
+    'langcode' => LANGUAGE_ALL,
+    'name' => t('All languages'),
+    'weight' => ++$max_weight,
+  ) + $locked_language);
+  return $languages;
 }
 
 /**
@@ -65,6 +110,13 @@ function language_schema() {
         'default' => 0,
         'description' => 'Weight, used in lists of languages.',
       ),
+      'locked' => array(
+        'type' => 'int',
+        'size' => 'tiny',
+        'not null' => TRUE,
+        'default' => 0,
+        'description' => 'A boolean indicating whether the administrator can edit or delete the language.',
+      ),
     ),
     'primary key' => array('langcode'),
     'indexes' => array(
@@ -101,3 +153,23 @@ function language_update_8000() {
     variable_set('language_default', $language_default);
   }
 }
+
+/**
+ * Adds the locked column and saves the special languages.
+ */
+function language_update_8001() {
+  if (!db_field_exists('language', 'locked')) {
+    $locked_spec = array(
+      'type' => 'int',
+      'size' => 'tiny',
+      'not null' => TRUE,
+      'default' => 0,
+      'description' => 'A boolean indicating whether the administrator can edit or delete the language.',
+    );
+    db_add_field('language', 'locked', $locked_spec);
+  }
+  $languages = language_special_languages();
+  foreach ($languages as $language) {
+    language_save($language);
+  }
+}
diff --git a/core/modules/locale/locale.module b/core/modules/locale/locale.module
index 6d3ded0..3025415 100644
--- a/core/modules/locale/locale.module
+++ b/core/modules/locale/locale.module
@@ -1019,7 +1019,7 @@ function locale_form_language_admin_overview_form_alter(&$form, &$form_state) {
       'translated' => 0,
       'ratio' => 0,
     );
-    if ($langcode != 'en' || locale_translate_english()) {
+    if (empty($language->locked) && ($langcode != 'en' || locale_translate_english())) {
       $form['languages'][$langcode]['locale_statistics'] = array(
         '#type' => 'link',
         '#title' => t('@translated/@total (@ratio%)', array(
@@ -1030,9 +1030,14 @@ function locale_form_language_admin_overview_form_alter(&$form, &$form_state) {
         '#href' => 'admin/config/regional/translate/translate',
       );
     }
+    elseif ($langcode == LANGUAGE_SYSTEM) {
+      $form['languages'][$langcode]['locale_statistics'] = array(
+        '#markup' => t('Built-in'),
+      );
+    }
     else {
       $form['languages'][$langcode]['locale_statistics'] = array(
-        '#markup' => t('not applicable'),
+        '#markup' => t('Not applicable'),
       );
     }
   }
diff --git a/core/modules/locale/locale.pages.inc b/core/modules/locale/locale.pages.inc
index 0d59f42..5f7a4ce 100644
--- a/core/modules/locale/locale.pages.inc
+++ b/core/modules/locale/locale.pages.inc
@@ -28,7 +28,7 @@ function _locale_translate_seek() {
   if (!($query = _locale_translate_seek_query())) {
     $query = array(
       'translation' => 'all',
-      'language' => 'all',
+      'language' => LANGUAGE_ALL,
       'string' => '',
     );
   }
@@ -64,7 +64,7 @@ function _locale_translate_seek() {
   }
 
   $limit_language = NULL;
-  if ($query['language'] != LANGUAGE_SYSTEM && $query['language'] != 'all') {
+  if ($query['language'] != LANGUAGE_SYSTEM && $query['language'] != LANGUAGE_ALL) {
     $sql_query->condition('language', $query['language']);
     $limit_language = $query['language'];
   }
@@ -119,7 +119,7 @@ function _locale_translate_language_list($translation, $limit_language) {
   }
   $output = '';
   foreach ($languages as $langcode => $language) {
-    if (!$limit_language || $limit_language == $langcode) {
+    if (empty($language->locked) && (!$limit_language || $limit_language == $langcode)) {
       $output .= (!empty($translation[$langcode])) ? $langcode . ' ' : "<em class=\"locale-untranslated\">$langcode</em> ";
     }
   }
@@ -155,7 +155,7 @@ function locale_translation_filters() {
   $languages = language_list(TRUE);
   $language_options = array();
   foreach ($languages as $langcode => $language) {
-    if ($langcode != 'en' || locale_translate_english()) {
+    if (empty($language->locked) && ($langcode != 'en' || locale_translate_english())) {
       $language_options[$langcode] = $language->name;
     }
   }
@@ -167,7 +167,7 @@ function locale_translation_filters() {
 
   $filters['language'] = array(
     'title' => t('Language'),
-    'options' => array_merge(array('all' => t('All languages'), LANGUAGE_SYSTEM => t('System (English)')), $language_options),
+    'options' => array_merge(array(LANGUAGE_ALL => t('All languages'), LANGUAGE_SYSTEM => t('System (English)')), $language_options),
   );
 
   $filters['translation'] = array(
@@ -343,6 +343,9 @@ function locale_translate_edit_form($form, &$form_state, $lid) {
   // Approximate the number of rows to use in the default textarea.
   $rows = min(ceil(str_word_count($source_array[0]) / 12), 10);
   foreach ($languages as $langcode => $language) {
+    if (!empty($language->locked)) {
+      continue;
+    }
     $form['translations'][$langcode] = array(
       '#type' => 'fieldset',
       '#title' => $language->name,
diff --git a/core/modules/node/node.pages.inc b/core/modules/node/node.pages.inc
index 4e94b26..df59ed2 100644
--- a/core/modules/node/node.pages.inc
+++ b/core/modules/node/node.pages.inc
@@ -184,9 +184,8 @@ function node_form($form, &$form_state, $node) {
     $form['langcode'] = array(
       '#type' => 'select',
       '#title' => t('Language'),
-      '#default_value' => (isset($node->langcode) ? $node->langcode : ''),
+      '#default_value' => (isset($node->langcode) ? $node->langcode : LANGUAGE_NOT_SPECIFIED),
       '#options' => $language_options,
-      '#empty_value' => LANGUAGE_NOT_SPECIFIED,
     );
   }
   else {