ssh problem

[Mate Wierdl]

On two Redhat boxes we installed the openssh rpms:

rpm -qa|grep open
openssh-1.2.1pre25-1us
openssh-askpass-1.2.1pre25-1us
openssl-0.9.4-3us
openssl-devel-0.9.4-3us
openssh-clients-1.2.1pre25-1us
openssh-server-1.2.1pre25-1us

The only difference between the two machines is that one is 6.0, the
other is 6.1.  Now trying to ssh from the 6.1 machine to the 6.0,
gives

ssh -v troy
SSH Version OpenSSH-1.2.1, protocol version 1.5.
Compiled with SSL (RSAref version).
debug: Reading configuration data /etc/ssh/ssh_config
debug: ssh_connect: getuid 500 geteuid 0 anon 0
debug: Connecting to troy.msci.memphis.edu [141.225.11.160] port 22.
debug: Allocated local port 1023.
debug: Connection established.
ssh_exchange_identification: read: Success
debug: Calling cleanup 0x8054c80(0x0)

There is no problem with ssh the other way around.

Any hints?

Thx

Mate