diff --git a/src/includes/class/class.LSlang.php b/src/includes/class/class.LSlang.php
index 27c4f066..df02cf8f 100644
--- a/src/includes/class/class.LSlang.php
+++ b/src/includes/class/class.LSlang.php
@@ -78,7 +78,7 @@ class LSlang extends LSlog_staticLoggerClass {
 
      // Check
      if (self :: localeExist($lang, $encoding)) {
-       self :: log("DEBUG", "setLocale() : Use local '$lang.$encoding'");
+       self :: log_debug("setLocale() : Use local '$lang.$encoding'");
        if ($encoding) {
          $lang .= '.'.$encoding;
        }
@@ -87,26 +87,26 @@ class LSlang extends LSlog_staticLoggerClass {
 
        // Set the locale
        if (setlocale(LC_ALL, $lang) === false)
-         self :: log("ERROR", "An error occured setting locale to '$lang'");
+         self :: log_error("An error occured setting locale to '$lang'");
 
        // Configure and set the text domain
        $fullpath = bindtextdomain(LS_TEXT_DOMAIN, LS_I18N_DIR_PATH);
-       self :: log("DEBUG", "setLocale(): Text domain fullpath is '$fullpath'.");
-       self :: log("DEBUG", "setLocale(): Text domain is : ".textdomain(LS_TEXT_DOMAIN));
+       self :: log_debug("setLocale(): Text domain fullpath is '$fullpath'.");
+       self :: log_debug("setLocale(): Text domain is : ".textdomain(LS_TEXT_DOMAIN));
 
        // Include local translation file
        $lang_file = LS_I18N_DIR.'/'.$lang.'/lang.php';
        if (LSsession :: includeFile($lang_file, false, false))
-         self :: log("DEBUG", "setLocale(): lang file '$lang_file' loaded.");
+         self :: log_debug("setLocale(): lang file '$lang_file' loaded.");
        else
-         self :: log("DEBUG", "setLocale(): no lang file found ($lang_file).");
+         self :: log_debug("setLocale(): no lang file found ($lang_file).");
 
        // Include other local translation file(s)
        foreach(array(LS_I18N_DIR_PATH.'/'.$lang, LS_LOCAL_DIR.'/'.LS_I18N_DIR.'/'.$lang) as $lang_dir) {
          if (is_dir($lang_dir)) {
            foreach (listFiles($lang_dir, '/^lang.+\.php$/') as $file) {
              $path = "$lang_dir/$file";
-             self :: log("DEBUG", "setLocale(): Local '$lang.$encoding' : load translation file '$path'");
+             self :: log_debug("setLocale(): Local '$lang.$encoding' : load translation file '$path'");
              include($path);
            }
          }
@@ -114,7 +114,7 @@ class LSlang extends LSlog_staticLoggerClass {
      }
      else {
        if ($encoding && $lang) $lang .= '.'.$encoding;
-       self :: log("ERROR", "The local '$lang' does not exists, use default one.");
+       self :: log_error("The local '$lang' does not exists, use default one.");
      }
    }
 
diff --git a/src/includes/class/class.LSldap.php b/src/includes/class/class.LSldap.php
index 8b5884fd..2623cc9d 100644
--- a/src/includes/class/class.LSldap.php
+++ b/src/includes/class/class.LSldap.php
@@ -20,6 +20,8 @@
 
 ******************************************************************************/
 
+LSsession :: loadLSclass('LSlog_staticLoggerClass');
+
 /**
  * Gestion de l'accès à l'annaire Ldap
  *
@@ -27,7 +29,7 @@
  *
  * @author Benjamin Renard <brenard@easter-eggs.com>
  */
-class LSldap {
+class LSldap extends LSlog_staticLoggerClass {
 
   private static $config;
   private static $cnx = NULL;
@@ -139,7 +141,7 @@ class LSldap {
       LSerror :: addErrorCode('LSldap_02',$ret -> getMessage());
       return;
     }
-    LSdebug("LSldap::search() : return ".$ret->count()." objet(s)");
+    self :: log_debug("LSldap::search() : return ".$ret->count()." objet(s)");
     $retInfos=array();
     foreach($ret as $dn => $entry) {
       if (!$entry instanceof Net_LDAP2_Entry) {
@@ -291,7 +293,7 @@ class LSldap {
    * @retval boolean true si l'objet a bien été mis à jour, false sinon
    */
   public static function update($object_type,$dn,$change) {
-    LSdebug($change);
+    self :: log_debug($change);
     $dropAttr=array();
     $entry=self :: getEntry($object_type,$dn);
     if (is_array($entry)) {
@@ -325,19 +327,19 @@ class LSldap {
       }
       if (isset($changeData)) {
         $entry -> replace($changeData);
-        LSdebug('change : <pre>'.print_r($changeData,true).'</pre>');
-        LSdebug('drop : <pre>'.print_r($dropAttr,true).'</pre>');
+        self :: log_debug('change : <pre>'.print_r($changeData,true).'</pre>');
+        self :: log_debug('drop : <pre>'.print_r($dropAttr,true).'</pre>');
       }
       else {
-        LSdebug('No change');
+        self :: log_debug('No change');
       }
 
       if ($new) {
-        LSdebug('LSldap :: add()');
+        self :: log_debug('LSldap :: add()');
         $ret = self :: $cnx -> add($entry);
       }
       else {
-        LSdebug('LSldap :: update()');
+        self :: log_debug('LSldap :: update()');
         $ret = $entry -> update();
       }
 
diff --git a/src/includes/class/class.LSldapObject.php b/src/includes/class/class.LSldapObject.php
index 36327be1..7dfd2171 100644
--- a/src/includes/class/class.LSldapObject.php
+++ b/src/includes/class/class.LSldapObject.php
@@ -344,9 +344,9 @@ class LSldapObject extends LSlog_staticLoggerClass {
       }
     }
     if($this -> validateAttrsData($idForm)) {
-      self :: log("DEBUG", "les données sont validées");
+      self :: log_debug("les données sont validées");
       if ($justValidate) {
-        self :: log("DEBUG", 'Just validate mode');
+        self :: log_debug('Just validate mode');
         return True;
       }
 
@@ -362,7 +362,7 @@ class LSldapObject extends LSlog_staticLoggerClass {
       }
 
       if ($this -> submitChange($idForm)) {
-        self :: log("DEBUG", 'Les modifications sont submitées');
+        self :: log_debug('Les modifications sont submitées');
         // Event After Modify
         $this -> fireEvent('after_modify');
 
@@ -591,7 +591,7 @@ class LSldapObject extends LSlog_staticLoggerClass {
       if(($attr -> isUpdate())&&($attr -> isValidate())) {
         if(($attr -> name == $this -> getConfig('rdn')) && (!$new)) {
           $new = true;
-          self :: log("DEBUG", 'Rename');
+          self :: log_debug('Rename');
           if (!$this -> fireEvent('before_rename')) {
             LSerror :: addErrorCode('LSldapObject_16');
             return;
@@ -627,7 +627,7 @@ class LSldapObject extends LSlog_staticLoggerClass {
       $dn=$this -> getDn();
       if($dn) {
         $this -> dn=$dn;
-        self :: log("DEBUG", $submitData);
+        self :: log_debug($submitData);
         if ($new) {
           if (!$this -> fireEvent('before_create')) {
             LSerror :: addErrorCode('LSldapObject_20');
@@ -1143,7 +1143,7 @@ class LSldapObject extends LSlog_staticLoggerClass {
           );
         }
         else {
-          self :: log("DEBUG", 'Problème durant la mise en cache de la relation '.$relation_name);
+          self :: log_debug('Problème durant la mise en cache de la relation '.$relation_name);
           return;
         }
       }
@@ -1267,7 +1267,7 @@ class LSldapObject extends LSlog_staticLoggerClass {
    * @retval True en cas de cas ce succès, False sinon.
    */
   private function afterCreate() {
-    self :: log("DEBUG", 'after');
+    self :: log_debug('after');
     $error = 0;
 
     // container_auto_create
@@ -1279,7 +1279,7 @@ class LSldapObject extends LSlog_staticLoggerClass {
             if (isset($conf_type['container_auto_create'])&&isset($conf_type['container_dn'])) {
               $dn = $conf_type['container_dn'].','.$this -> getDn();
               if(!LSldap :: getNewEntry($dn,$conf_type['container_auto_create']['objectclass'],$conf_type['container_auto_create']['attrs'],true)) {
-                self :: log("DEBUG", "Impossible de créer l'entrée fille : ".print_r(
+                self :: log_debug("Impossible de créer l'entrée fille : ".print_r(
                   array(
                     'dn' => $dn,
                     'objectClass' => $conf_type['container_auto_create']['objectclass'],
@@ -1911,7 +1911,7 @@ class LSldapObject extends LSlog_staticLoggerClass {
 
     $obj = new $objType();
     if (!$obj->loadData($dn)) {
-      self :: log("FATAL", "Fail to load object $dn data from LDAP");
+      self :: log_fatal("Fail to load object $dn data from LDAP");
       return false;
     }
 
@@ -1962,7 +1962,7 @@ class LSldapObject extends LSlog_staticLoggerClass {
           }
         }
         else {
-          self :: log("ERROR", "Fail to load related objects.");
+          self :: log_error("Fail to load related objects.");
         }
         echo "\n";
       }
@@ -2036,7 +2036,7 @@ class LSldapObject extends LSlog_staticLoggerClass {
 
       $obj = new $objType();
       if (!$obj->loadData($dn)) {
-        self :: log("FATAL", "Fail to load object $dn data from LDAP");
+        self :: log_fatal("Fail to load object $dn data from LDAP");
         return false;
       }
 
@@ -2054,10 +2054,10 @@ class LSldapObject extends LSlog_staticLoggerClass {
       }
 
       if ($obj -> remove()) {
-        self :: log("INFO", "Object ".$obj->getDn()." removed.");
+        self :: log_info("Object ".$obj->getDn()." removed.");
         return true;
       }
-      self :: log("ERROR", "Fail to remove object ".$obj->getDn().".");
+      self :: log_error("Fail to remove object ".$obj->getDn().".");
       return false;
     }
 
@@ -2110,17 +2110,17 @@ class LSldapObject extends LSlog_staticLoggerClass {
 
       $obj = new $objType();
       if (!$obj->loadData($dn)) {
-        self :: log("FATAL", "Fail to load object $dn data from LDAP");
+        self :: log_fatal("Fail to load object $dn data from LDAP");
         return false;
       }
 
       if (!LSsession :: loadLSclass('LSrelation')) {
-        self :: log("FATAL", "Fail to load LSrelation class.");
+        self :: log_fatal("Fail to load LSrelation class.");
         return false;
       }
 
       if (!is_array($obj -> getConfig("LSrelation.$relName"))) {
-        self :: log("FATAL", "LSobject $objType have no relation '$relName'.");
+        self :: log_fatal("LSobject $objType have no relation '$relName'.");
         return false;
       }
 
@@ -2134,7 +2134,7 @@ class LSldapObject extends LSlog_staticLoggerClass {
           $listDns[] = $o -> getDn();
         }
       }
-      self :: log("DEBUG", "Current related object(s) :".varDump($listDns));
+      self :: log_debug("Current related object(s) :".varDump($listDns));
 
       // Keep a copy of initial related objects list
       $initialListDns = $listDns;
@@ -2151,7 +2151,7 @@ class LSldapObject extends LSlog_staticLoggerClass {
       foreach ($add as $dn) {
         // Check if DN is already in relation
         if (in_array($dn, $listDns)) {
-          self :: log("DEBUG", "LSobject $relatedLSobject $dn is already in relation with ".$obj -> getDn().".");
+          self :: log_debug("LSobject $relatedLSobject $dn is already in relation with ".$obj -> getDn().".");
           continue;
         }
 
@@ -2160,7 +2160,7 @@ class LSldapObject extends LSlog_staticLoggerClass {
         $search -> run(false);
         $result = $search -> listObjectsDn();
         if (!is_array($result) || count($result) != 1) {
-          self :: log("ERROR", "No $relatedLSobject found for DN $dn");
+          self :: log_error("No $relatedLSobject found for DN $dn");
           return false;
         }
         $listDns[] = $dn;
@@ -2176,20 +2176,20 @@ class LSldapObject extends LSlog_staticLoggerClass {
           unset($listDns[$key]);
         }
         if (!$found)
-          self :: log("DEBUG", "LSobject $relatedLSobject $dn is not in relation with ".$obj -> getDn().".");
+          self :: log_debug("LSobject $relatedLSobject $dn is not in relation with ".$obj -> getDn().".");
       }
 
       if ($initialListDns == $listDns) {
-        self :: log("INFO", 'No changes done.');
+        self :: log_info('No changes done.');
         return True;
       }
 
-      self :: log("DEBUG", "New related object(s) list: ".varDump($listDns));
+      self :: log_debug("New related object(s) list: ".varDump($listDns));
       if ($relation -> updateRelations($listDns)) {
-        self :: log("INFO", 'Objects in relation updated.');
+        self :: log_info('Objects in relation updated.');
         return True;
       }
-      self :: log("ERROR", "Fail to update objects in relation");
+      self :: log_error("Fail to update objects in relation");
       return False;
     }
 }
diff --git a/src/includes/class/class.LStemplate.php b/src/includes/class/class.LStemplate.php
index 482c0711..be11bef3 100644
--- a/src/includes/class/class.LStemplate.php
+++ b/src/includes/class/class.LStemplate.php
@@ -98,7 +98,7 @@ class LStemplate extends LSlog_staticLoggerClass {
       self :: $_smarty -> template_dir = self :: $config['template_dir'];
 
       if ( ! is_writable(self :: $config['compile_dir']) ) {
-        self :: log("FATAL", getFData(_("LStemplate : compile directory is not writable (dir : %{dir})"), self :: $config['compile_dir']));
+        self :: log_fatal(getFData(_("LStemplate : compile directory is not writable (dir : %{dir})"), self :: $config['compile_dir']));
       }
       self :: $_smarty -> compile_dir = self :: $config['compile_dir'];
 
@@ -196,7 +196,7 @@ class LStemplate extends LSlog_staticLoggerClass {
       // Checks that the file is in the actual folder location
       $pos = strpos($file_path, $dir_path);
       if (!is_int($pos) || $pos != 0) {
-        self :: log("ERROR", "LStemplate :: getFilePath($file, $root_dir, $default_dir, $with_nocache) : File '$file_path' is not in root directory '$dir_path' (".varDump($pos).").");
+        self :: log_error("LStemplate :: getFilePath($file, $root_dir, $default_dir, $with_nocache) : File '$file_path' is not in root directory '$dir_path' (".varDump($pos).").");
       }
       elseif (file_exists($file_path)) {
         $path = $file_path;
@@ -276,7 +276,7 @@ class LStemplate extends LSlog_staticLoggerClass {
   **/
   public static function getTemplatePath($template, $with_nocache=false) {
     if (in_array($template, self :: $deprecated_template_files))
-      self :: log("FATAL",
+      self :: log_fatal(
         getFData(
           _("LStemplate : Request template '%{tpl}' is now deprecated. Please refer to upgrade documentation to adapt your templates."),
           $template
diff --git a/src/includes/class/class.LSurl.php b/src/includes/class/class.LSurl.php
index 7fb10bb6..735e5de5 100644
--- a/src/includes/class/class.LSurl.php
+++ b/src/includes/class/class.LSurl.php
@@ -82,14 +82,14 @@ class LSurl extends LSlog_staticLoggerClass {
         );
       }
       elseif ($override) {
-        self :: log("\Udebug", "URL : override pattern '$pattern' with handler '$handler' (old handler = '".self :: $patterns[$pattern]."')");
+        self :: log_debug("URL : override pattern '$pattern' with handler '$handler' (old handler = '".self :: $patterns[$pattern]."')");
         self :: $patterns[$pattern] = array(
           'handler' => $handler,
           'authenticated' => $authenticated,
         );
       }
       else {
-        self :: log("DEBUG", "URL : pattern '$pattern' already defined : do not override.");
+        self :: log_debug("URL : pattern '$pattern' already defined : do not override.");
       }
     }
   }
@@ -105,16 +105,16 @@ class LSurl extends LSlog_staticLoggerClass {
   private static function get_request($default_url=null) {
     $current_url = self :: get_current_url();
     if (is_null($current_url)) {
-      self :: log("FATAL", _("Fail to determine the requested URL."));
+      self :: log_fatal(_("Fail to determine the requested URL."));
       exit();
     }
     if (!is_array(self :: $patterns)) {
-      self :: log("FATAL", 'No URL patterns configured !');
+      self :: log_fatal('No URL patterns configured !');
       exit();
     }
 
-    self :: log("DEBUG", "URL : current url = '$current_url'");
-    self :: log("DEBUG", "URL : check current url with the following URL patterns :\n - ".implode("\n - ", array_keys(self :: $patterns)));
+    self :: log_debug("URL : current url = '$current_url'");
+    self :: log_debug("URL : check current url with the following URL patterns :\n - ".implode("\n - ", array_keys(self :: $patterns)));
     foreach (self :: $patterns as $pattern => $handler_infos) {
       $m = self :: url_match($pattern, $current_url);
       if (is_array($m)) {
@@ -122,16 +122,16 @@ class LSurl extends LSlog_staticLoggerClass {
         // Reset last redirect
         if (isset($_SESSION['last_redirect']))
           unset($_SESSION['last_redirect']);
-        self :: log("DEBUG", "URL : result :\n".varDump($request, 1));
+        self :: log_debug("URL : result :\n".varDump($request, 1));
         return $request;
       }
     }
     if (!is_null($default_url)) {
-      self :: log("DEBUG", "Current URL match with no pattern. Redirect to default URL ('$default_url')");
+      self :: log_debug("Current URL match with no pattern. Redirect to default URL ('$default_url')");
       self :: redirect($default_url);
       exit();
     }
-    self :: log("DEBUG", "Current URL match with no pattern. Use error 404 handler.");
+    self :: log_debug("Current URL match with no pattern. Use error 404 handler.");
     return new LSurlRequest(
       $current_url,
       array(
@@ -155,7 +155,7 @@ class LSurl extends LSlog_staticLoggerClass {
       if (!$current_url) return False;
     }
     if (preg_match($pattern, $current_url, $m)) {
-      self :: log("DEBUG", "URL : Match found with pattern '$pattern' :\n\t".str_replace("\n", "\n\t", print_r($m, 1)));
+      self :: log_debug("URL : Match found with pattern '$pattern' :\n\t".str_replace("\n", "\n\t", print_r($m, 1)));
       return $m;
     }
     return False;
@@ -169,7 +169,7 @@ class LSurl extends LSlog_staticLoggerClass {
   public static function get_current_url() {
     if (array_key_exists(self :: REWRITED_REQUEST_PARAM, $_REQUEST))
       return $_REQUEST[self :: REWRITED_REQUEST_PARAM];
-    self :: log("WARNING", 'LSurl : Rewrite request param not present, try to detect current URL.');
+    self :: log_warning('LSurl : Rewrite request param not present, try to detect current URL.');
     return self :: detect_current_url();
   }
 
@@ -187,13 +187,13 @@ class LSurl extends LSlog_staticLoggerClass {
     $public_root_url = LSconfig :: get('public_root_url', '/', 'string');
 
     if ($public_root_url[0] == '/') {
-      self :: log("DEBUG", "LSurl :: get_public_absolute_url($relative_url): configured public root URL is relative ($public_root_url) => try to detect it from current request infos.");
+      self :: log_debug("LSurl :: get_public_absolute_url($relative_url): configured public root URL is relative ($public_root_url) => try to detect it from current request infos.");
       $public_root_url = 'http'.(isset($_SERVER['HTTPS']) && $_SERVER['HTTPS'] == 'on'?'s':'').'://'.$_SERVER['HTTP_HOST'].$public_root_url;
-      self :: log("DEBUG", "LSurl :: get_public_absolute_url($relative_url): detected public_root_url: $public_root_url");
+      self :: log_debug("LSurl :: get_public_absolute_url($relative_url): detected public_root_url: $public_root_url");
     }
 
     $url = self :: remove_trailing_slash($public_root_url)."/$relative_url";
-    self :: log("DEBUG", "LSurl :: get_public_absolute_url($relative_url): result = $url");
+    self :: log_debug("LSurl :: get_public_absolute_url($relative_url): result = $url");
     return $url;
   }
 
@@ -222,11 +222,11 @@ class LSurl extends LSlog_staticLoggerClass {
 
     // Prevent loop
     if (isset($_SESSION['last_redirect']) && $_SESSION['last_redirect'] == $url)
-      self :: log("FATAL", _("Fail to determine the requested URL (loop detected)."));
+      self :: log_fatal(_("Fail to determine the requested URL (loop detected)."));
     else
       $_SESSION['last_redirect'] = $url;
 
-    self :: log("DEBUG", "redirect($go) => Redirect to : <$url>");
+    self :: log_debug("redirect($go) => Redirect to : <$url>");
     header("Location: $url");
 
     // Set & display template
@@ -260,8 +260,8 @@ class LSurl extends LSlog_staticLoggerClass {
     $request = self :: get_request($default_url);
 
     if (!is_callable($request -> handler)) {
-      self :: log("ERROR", "URL handler function ".$request -> handler."() does not exists !");
-      self :: log("FATAL", "This request could not be handled.");
+      self :: log_error("URL handler function ".$request -> handler."() does not exists !");
+      self :: log_fatal("This request could not be handled.");
     }
 
     if (class_exists('LStemplate'))
@@ -278,7 +278,7 @@ class LSurl extends LSlog_staticLoggerClass {
     }
     catch (Exception $e) {
       self :: log_exception($e, "An exception occured running URL handler function ".$request -> handler."()");
-      self :: log("FATAL", "This request could not be processed correctly.");
+      self :: log_fatal("This request could not be processed correctly.");
     }
   }
 
@@ -292,16 +292,16 @@ class LSurl extends LSlog_staticLoggerClass {
    * @retval string|false The current request URL or false if detection fail
    **/
   private static function detect_current_url() {
-    self :: log("DEBUG", "URL : request URI = '".$_SERVER['REQUEST_URI']."'");
+    self :: log_debug("URL : request URI = '".$_SERVER['REQUEST_URI']."'");
 
     $base = self :: get_rewrite_base();
-    self :: log("DEBUG", "URL : rewrite base = '$base'");
+    self :: log_debug("URL : rewrite base = '$base'");
 
     if ($_SERVER['REQUEST_URI'] == $base)
       return '';
 
     if (substr($_SERVER['REQUEST_URI'], 0, strlen($base)) != $base) {
-      self :: log("ERROR", "URL : request URI (".$_SERVER['REQUEST_URI'].") does not start with rewrite base ($base)");
+      self :: log_error("URL : request URI (".$_SERVER['REQUEST_URI'].") does not start with rewrite base ($base)");
       return False;
     }