i add a grizzly version source of Open Stack Object Storage (Swift) in my /etc/apt/source.list, but i got the version 'swift 1.0' by tying 'swift --version' command, while i got another version 'Version: 1.8.0-0ubuntu1.2~cloud0' by tying 'dpkg -p swift | grep Version' command, i am really confused, can anyone explain it for me, i appreciate.