Appears that SSH is enabled on that box, but you don't have any method of authentication specified. It will prompt you for a user/pass, but it doesn't really check it against anything.
Check out this link for some troubleshooting steps *(it's where I got the show commands above)
http://www.cisco.com/en/US/tech/tk583/tk617/technologies_tech_note09186a00800949e2.shtml#tbsThe link suggests you delete the RSA key pair, which then disables SSH