diff --git a/extra/modules/quota.py b/extra/modules/quota.py
index 600884b..0d2286d 100644
--- a/extra/modules/quota.py
+++ b/extra/modules/quota.py
@@ -89,3 +89,6 @@ def can_logo():
 
 def can_theme():
     return get_boolean_quota('x-asec-can-theme')
+
+def is_locked():
+    return get_boolean_quota('x-asec-locked')
diff --git a/extra/modules/root.ptl b/extra/modules/root.ptl
index c2c54b2..860e3ad 100644
--- a/extra/modules/root.ptl
+++ b/extra/modules/root.ptl
@@ -79,6 +79,8 @@ class RootDirectory(wcs.root.RootDirectory):
         if not hasattr(response, 'breadcrumb'):
             response.breadcrumb = [ ('', _('Home')) ]
         response.filter['logo_url'] = boconfig.get_logo_url()
+        if quota.is_locked() and (len(path) == 0 or not path[0] in ['themes', 'robots.txt']):
+            return TextsDirectory.get_html_text('asec-locked-site')
         return Directory._q_traverse(self, path)
 
     def _q_index [html] (self):
@@ -139,4 +141,11 @@ Welcome on your new site. It is currently empty, you should go to the
 </p>
 '''))
 
+TextsDirectory.register('asec-locked-site',
+        N_('Text displayed when the site is locked'),
+        default=N_('''<p>
+This site has been locked.
+</p>
+'''))
+