diff --git a/htdocs/admin/boxes.php b/htdocs/admin/boxes.php
index 7e092c56abd..262cd4c29d4 100644
--- a/htdocs/admin/boxes.php
+++ b/htdocs/admin/boxes.php
@@ -1,6 +1,6 @@
 <?php
 /* Copyright (C) 2003-2005 Rodolphe Quiedeville <rodolphe@quiedeville.org>
- * Copyright (C) 2004-2012 Laurent Destailleur  <eldy@users.sourceforge.net>
+ * Copyright (C) 2004-2013 Laurent Destailleur  <eldy@users.sourceforge.net>
  * Copyright (C) 2005-2012 Regis Houssin        <regis.houssin@capnetworks.com>
  *
  * This program is free software; you can redistribute it and/or modify
@@ -397,7 +397,14 @@ foreach($boxactivated as $key => $box)
     print "\n".'<!-- Box '.$box->boxcode.' -->'."\n";
 	print '<tr '.$bc[$var].'>';
 	print '<td>'.img_object("",$logo).' '.$box->boxlabel.'</td>';
-	print '<td>' . ($box->note?$box->note:'&nbsp;') . '</td>';
+	print '<td>';
+	if ($box->note == '(WarningUsingThisBoxSlowDown)')
+	{
+		$langs->load("errors");
+		print img_warning('',0).' '.$langs->trans("WarningUsingThisBoxSlowDown");
+	}
+	else print ($box->note?$box->note:'&nbsp;');
+	print '</td>';
 	print '<td align="center">' . (isset($pos_name[$box->position])?$pos_name[$box->position]:'') . '</td>';
 	$hasnext=($key < (count($boxactivated)-1));
 	$hasprevious=($key != 0);
diff --git a/htdocs/core/boxes/box_activity.php b/htdocs/core/boxes/box_activity.php
index adbc2c7090a..834799878d2 100644
--- a/htdocs/core/boxes/box_activity.php
+++ b/htdocs/core/boxes/box_activity.php
@@ -55,8 +55,7 @@ class box_activity extends ModeleBoxes
 
 		$this->boxlabel = $langs->transnoentitiesnoconv("BoxGlobalActivity");
 
-		// Disabled by default because, still has some bug (pgsl support, filters) and slow down seriously Dolibarr 
-		$this->enabled = (! empty($conf->global->MAIN_FEATURES_LEVEL) || ! empty($conf->global->MAIN_BOX_ACTIVITY_ENABLED));
+		$this->enabled = 1;
 		// FIXME: Use a cache to save data because this slow down too much main home page. This box slow down too seriously software.
 		// FIXME: Removed number_format (not compatible with all languages)
 		// FIXME: Pb into some status
diff --git a/htdocs/core/modules/modSociete.class.php b/htdocs/core/modules/modSociete.class.php
index 72c4ea71889..a5c446a02e7 100644
--- a/htdocs/core/modules/modSociete.class.php
+++ b/htdocs/core/modules/modSociete.class.php
@@ -126,6 +126,7 @@ class modSociete extends DolibarrModules
         $this->boxes[$r][1] = "box_contacts.php";
         $r++;
         $this->boxes[$r][1] = "box_activity.php";
+        $this->boxes[$r][2] = '(WarningUsingThisBoxSlowDown)';
         $r++;
 
 		// Permissions
diff --git a/htdocs/langs/en_US/errors.lang b/htdocs/langs/en_US/errors.lang
index f034287a880..2c5f634fff6 100644
--- a/htdocs/langs/en_US/errors.lang
+++ b/htdocs/langs/en_US/errors.lang
@@ -129,4 +129,5 @@ WarningsOnXLines=Warnings on <b>%s</b> source lines
 WarningNoDocumentModelActivated=No model, for document generation, has been activated. A model will be choosed by default until you check your module setup.
 WarningLockFileDoesNotExists=Warning, once setup is finished, you must disable install/migrate tools by adding a file <b>install.lock</b> into directory <b>%s</b>. Missing this file is a security hole. 
 WarningUntilDirRemoved=All security warnings (visible by admin users only) will remain active as long as the vulnerability is present (or that constant MAIN_REMOVE_INSTALL_WARNING is added in Setup->Other setup).
-WarningCloseAlways=Warning, closing is done even if amount differs between source and target elements. Enable this feature with caution.
\ No newline at end of file
+WarningCloseAlways=Warning, closing is done even if amount differs between source and target elements. Enable this feature with caution.
+WarningUsingThisBoxSlowDown=Warning, using this box slow down seriously all pages showing the box.
\ No newline at end of file
diff --git a/htdocs/langs/fr_FR/errors.lang b/htdocs/langs/fr_FR/errors.lang
index f683af9b736..99112a0db96 100644
--- a/htdocs/langs/fr_FR/errors.lang
+++ b/htdocs/langs/fr_FR/errors.lang
@@ -130,4 +130,5 @@ WarningsOnXLines=Alertes sur <b>%s</b> lignes sources
 WarningNoDocumentModelActivated=Aucun modèle, pour la génération de document, n'a été activé. Un modèle sera pris par défaut en attendant la correction de configuration du module.
 WarningLockFileDoesNotExists=Attention, une fois l'installation terminée, les outils d'installation/migration doivent être désactivés en ajoutant un fichier <b>install.lock</b> dans le répertoire <b>%s</b>. L'absence de ce fichier représente une faille de sécurité. 
 WarningUntilDirRemoved=Les alertes de sécurité sont visibles par les administrateurs uniquement et resteront actives tant que la vulnérabilité sera avérée (ou que la constante MAIN_REMOVE_INSTALL_WARNING aura été définie dans Configuration->Divers)
-WarningCloseAlways=Attention, la fermeture se fait même lorsque le montant diffère. N'activez cette fonctionnalité qu'en connaissance de cause.
\ No newline at end of file
+WarningCloseAlways=Attention, la fermeture se fait même lorsque le montant diffère. N'activez cette fonctionnalité qu'en connaissance de cause.
+WarningUsingThisBoxSlowDown=Attention, l'utilisation de cette boite provoque de sérieux ralentissement des pages affichant cette boite.
\ No newline at end of file