Index: trunk/packages/sipb-xen-database/sipb_xen_database/models.py
===================================================================
--- trunk/packages/sipb-xen-database/sipb_xen_database/models.py	(revision 556)
+++ trunk/packages/sipb-xen-database/sipb_xen_database/models.py	(revision 589)
@@ -104,5 +104,5 @@
                           'disks': relation(Disk, backref="machine", lazy=False),
                           'type': relation(Type, lazy=False),
-                          'acl': relation(MachineAccess, backref="machine", lazy=False)});
+                          'acl': relation(MachineAccess, backref="machine", lazy=False, private=True)});
 assign_mapper(ctx, MachineAccess, machine_access_table)
 assign_mapper(ctx, NIC, nic_table)