diff --git a/core/includes/bootstrap.inc b/core/includes/bootstrap.inc
index 027e070..af3ac84 100644
--- a/core/includes/bootstrap.inc
+++ b/core/includes/bootstrap.inc
@@ -2734,7 +2734,9 @@ function language_name($langcode) {
   if ($language = language_load($langcode)) {
     return $language->name;
   }
-
+  if (empty($langcode)) {
+    return t('Unknown');
+  }
   return t('Unknown (@langcode)', array('@langcode' => $langcode));
 }
 
diff --git a/core/modules/node/node.admin.inc b/core/modules/node/node.admin.inc
index 9578417..46bc090 100644
--- a/core/modules/node/node.admin.inc
+++ b/core/modules/node/node.admin.inc
@@ -104,8 +104,8 @@ function node_filters() {
     ) + node_type_get_names(),
   );
 
-  // Language filter if the site is multilingual.
-  if (language_multilingual()) {
+  // Language filter if language support is present.
+  if (node_multilanguage()) {
     $languages = language_list(TRUE);
     $language_options = array(LANGUAGE_NONE => t('- None -'));
     foreach ($languages as $langcode => $language) {
@@ -395,6 +395,26 @@ function node_admin_content($form, $form_state) {
 }
 
 /**
+ * Determines whether multiple languages currently are in use.
+ *
+ * When the node table has more than one language we are in this context.
+ *
+ * @return bool
+ *   TRUE when having more than 1 language in our nodes table.
+ *
+ * @see node_filter_form()
+ * @see node_admin_nodes()
+ */
+function node_multilanguage() {
+  static $multilanguage;
+
+  if (!isset($multilanguage)) {
+    $multilanguage = count(db_query("SELECT DISTINCT langcode FROM {node}")->fetchAll()) > 1;
+  }
+  return $multilanguage;
+}
+
+/**
  * Returns the admin form object to node_admin_content().
  *
  * @see node_multiple_delete_confirm()
@@ -433,11 +453,8 @@ function node_admin_nodes() {
     '#submit' => array('node_admin_nodes_submit'),
   );
 
-  // Enable language column if translation module is enabled or if we have any
-  // node with language.
-  $multilanguage = (module_exists('translation') || db_query_range("SELECT 1 FROM {node} WHERE langcode <> :langcode", 0, 1, array(':langcode' => LANGUAGE_NONE))->fetchField());
-
-  // Build the sortable table header.
+  // Enable language column when having more than one language for nodes.
+  $multilanguage = node_multilanguage();  // Build the sortable table header.
   $header = array(
     'title' => array('data' => t('Title'), 'field' => 'n.title'),
     'type' => array('data' => t('Content type'), 'field' => 'n.type'),