SSH dead in Terminal - always hangs

Hi,
I've lost the ability to SSH from Terminal. The verbose output shows that I can connect to servers but the process hangs after "SSH2MSG_SERVICEACCEPT received". I have no firewall or any type of peer guardian software running.
Things I've tried so far are - deleting adding new version of the known hosts and ssh_config files, installing a new version of SSH via Macports, playing with various settings in the ssh_config files, trying to SSH from a guest account. All fail.
Bizarrely, I can still use programmes like Meerkat and SSH Tunnel Manager to open an SSH connection for tunnelling and they work fine. Perhaps they have there own SSH within their packages.
I was wondering if anyone has had a similar problem to this, or can recommend how to completely remove the OpenSSH that comes with OS 10.6.
Thanks,
Paul

Have you looked that the sshd daemon log messages on the destination system? Depending on the system they should be in console message equivalent, such as /var/log/messages, or maybe /var/log/system.log, or maybe /var/log/secure.log, or perhaps /var/adm/messages, etc.... Different Unix systems use a different way of storing the console log messages.
In any event, seeing if the sshd log messages on the destination system say anything useful may be of help.

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