Index: branches/version-2_4/data/class/SC_Customer.php
===================================================================
--- branches/version-2_4/data/class/SC_Customer.php	(revision 17732)
+++ branches/version-2_4/data/class/SC_Customer.php	(revision 18420)
@@ -225,4 +225,8 @@
         // $_SESSION['customer']の解放
         unset($_SESSION['customer']);
+        $objSiteSess = new SC_SiteSession();
+        $objCartSess = new SC_CartSession();
+        $objSiteSess->unsetUniqId();
+        $objCartSess->delAllProducts();
         // ログに記録する
         GC_Utils_Ex::gfPrintLog("logout : user=".$this->customer_data['customer_id'] ."\t"."ip=". $this->getRemoteHost(), CUSTOMER_LOG_PATH );