=== modified file 'sites/default/themes/zen/template.php'
--- sites/default/themes/zen/template.php	2008-06-03 16:51:34 +0000
+++ sites/default/themes/zen/template.php	2008-07-11 20:53:45 +0000
@@ -289,7 +289,15 @@
   }
   if (!$vars['is_front']) {
     // Add unique classes for each page and website section
-    $path = drupal_get_path_alias($_GET['q']);
+    // Get path without language prefix
+    if(module_exists("i18n")){
+	$path = _i18n_get_original_path();
+	i18n_get_lang_prefix($path, TRUE); // second param tells it to strip the prefix off &$path
+	$body_classes[] = zen_id_safe('lang-'. i18n_get_lang());
+    }
+    else {
+	$path = drupal_get_path_alias($_GET['q']);
+    }
     list($section,) = explode('/', $path, 2);
     $body_classes[] = zen_id_safe('page-'. $path);
     $body_classes[] = zen_id_safe('section-'. $section);