[cobalt-security] ssh 3.1

[Gerald Waugh <gwaugh@xxxxxxxxxxxxxxxxxxxxxxx>]

Since upgrading my servers with OpenSSH 3.1, this is the response I receive 
when I try to log into my servers from my Mandrake Linux machine with an 
OpenSSH 3.1 client.

@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@
@    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 the RSA host key has just been changed.
The fingerprint for the RSA key sent by the remote host is
24:20:18:fd:7b:d3:c3:09:91:9c:ba:df:58:12:52:ea.
Please contact your system administrator.
Add correct host key in /home/gerald/.ssh/known_hosts to get rid of this 
message.
Offending key in /home/gerald/.ssh/known_hosts:6
RSA host key for fsn2 has changed and you have requested strict checking.
Host key verification failed.
;=====================end response =======================

I can do a normal login from a Red Hat Linux machine using OpenSSH 3.02 
client.
So it must be something to do with the client, but WHAT.
I have commented out almost everything in sshd_config
TIA for any ideas.

--
Gerald Waugh