FYI, https://bugs.launchpad.net/nova/+bug/810051 is marked as fix-released since 2011-09-16. I have the impression that they only fixed part of the problem, but I will let you analise that and tell so upstream if that's the case.
-- Marcos Marado -- To UNSUBSCRIBE, email to [email protected] with a subject of "unsubscribe". Trouble? Contact [email protected]
