Seems it's the only host currently using ECDSA, and the corresponding RR is missing in the DNS. Hence:
jimmy@vangogh:~$ ssh ortelius.toolserver.org @@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@ @ WARNING: REMOTE HOST IDENTIFICATION HAS CHANGED! @ @@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@ IT IS POSSIBLE THAT SOMEONE IS DOING SOMETHING NASTY! Someone could be eavesdropping on you right now (man-in-the-middle attack)! It is also possible that a host key has just been changed. The fingerprint for the ECDSA key sent by the remote host is 1a:02:b1:fb:19:61:63:ec:29:69:e1:46:fd:fa:21:12. Please contact your system administrator. Update the SSHFP RR in DNS with the new host key to get rid of this message. Last login: Thu Sep 6 12:55:43 2012 from vangogh.jimmyxu Rules: https://wiki.toolserver.org/view/Rules Documentation: https://wiki.toolserver.org/view/Getting_started
This system is a web server, not a login server. You may log into this system for web-related tasks, but tools must not be run here.
Next general maintenance window: Wed, 14.03, 19:00-23-59 UTC.
Your account will expire on Saturday, 10 November 2012. jimmy@ortelius:~$