I don't know what changed (packages versions for openssh-client and openssh-server are the same as reported on the first post), but the problem is gone.
I updated my hardy and installed several new packages, so I don't know which was exactly the solution.
I don't know what changed (packages versions for openssh-client and openssh-server are the same as reported on the first post), but the problem is gone.
I updated my hardy and installed several new packages, so I don't know which was exactly the solution.