--- arctic/tpl_functions.php	2010-10-29 21:40:27.000000000 +0200
+++ arctic-mbo/tpl_functions.php	2011-01-09 14:31:01.000000000 +0100
@@ -86,6 +86,16 @@
         case 'main':
             if(tpl_getConf('closedwiki') && !isset($_SERVER['REMOTE_USER'])) return;
             $main_sb = $pname;
+
+//translating the main sidebar
+            $translation = &plugin_load('helper','translation');
+            if ($translation) {
+                $curlc = $translation->getLangPart($ID);
+                list($lc,$idpart) = $translation->getTransParts($main_sb);
+                list($main_sb,$name) = $translation->buildTransID($curlc,$idpart);
+                if(substr($main_sb,0,1)==":") $main_sb=substr($main_sb,1);
+            }
+
             if(@page_exists($main_sb) && auth_quickaclcheck($main_sb) >= AUTH_READ) {
                 $always = tpl_getConf('main_sidebar_always');
                 if($always or (!$always && !getNS($ID))) {
@@ -346,8 +356,17 @@
     $ns_sb = '';
     $path  = explode(':', $id);
     $found = false;
+    array_pop($path); //remove the page from the path
+    $min_path_depth=0;
+//load translation plugin
+    $translation = &plugin_load('helper','translation');
+    if ($translation) { 
+//if it's a translated page, we need to increase depth to exlude the namespace sidebar
+        $curlc = $translation->getLangPart($id);
+        if ($curlc) $min_path_depth=1;
+    }
 
-    while(count($path) > 0) {
+    while(count($path) > $min_path_depth) {
         $ns_sb = implode(':', $path).':'.$pname;
         if(@page_exists($ns_sb)) return $ns_sb;
         array_pop($path);