diff --git a/VERSIONS_HOTLINE/31657 b/VERSIONS_HOTLINE/31657
new file mode 100644
index 0000000000000000000000000000000000000000..20da4e0c581582d079a1a83900bf82773a0ab683
--- /dev/null
+++ b/VERSIONS_HOTLINE/31657
@@ -0,0 +1 @@
+ - ticket #31657 : Pb authentification sur le site www.ma-mediatheque.net
\ No newline at end of file
diff --git a/library/startup.php b/library/startup.php
index cf16640dafeebddd4f54aef05a8fc81cb483d38a..77d955d90fbce5d6b2d0ecf216f7ca8b3fe52b23 100644
--- a/library/startup.php
+++ b/library/startup.php
@@ -159,10 +159,9 @@ function setupCache($cfg) {
                                $use_memcached ? 'Memcached' : 'File',
                                $frontendOptions,
                                $backendOptions);
-  //  $cache->clean(Zend_Cache::CLEANING_MODE_ALL);
 
   Storm_Cache::setDefaultZendCache($cache);
-  Storm_Cache::setSeed($cfg->sgbd->config->dbname);
+  Storm_Cache::setSeed($cfg->sgbd->config->dbname.md5(BASE_URL));
 }