diff -rN -up old-telepathy-gabble/src/tube-dbus.c new-telepathy-gabble/src/tube-dbus.c
--- old-telepathy-gabble/src/tube-dbus.c	2007-11-15 13:39:37.923570564 -0500
+++ new-telepathy-gabble/src/tube-dbus.c	2007-11-15 13:39:37.923570564 -0500
@@ -216,6 +216,14 @@ out:
   return DBUS_HANDLER_RESULT_HANDLED;
 }
 
+static dbus_bool_t
+allow_all_connections (DBusConnection *conn,
+                       unsigned long uid,
+                       void *data)
+{
+  return TRUE;
+}
+
 static void
 new_connection_cb (DBusServer *server,
                    DBusConnection *conn,
@@ -243,6 +251,13 @@
   dbus_connection_ref (conn);
   dbus_connection_setup_with_g_main (conn, NULL);
   dbus_connection_add_filter (conn, filter_cb, tube, NULL);
+
+  /* OLPC have a security system making applications running under
+   * a different uid than Gabble. So we have to explicitely allow connections
+   * from all uid. */
+  dbus_connection_set_unix_user_function (conn, allow_all_connections,
+      NULL, NULL);
+
   priv->dbus_conn = conn;
 
   /* We may have received messages to deliver before the local connection is