Roberto, could you give me a clue why ssh v1 is a bad thing?
I am running debian potato on my production server, and the only ssh version available there is OpenSSH-1.2.3 which does not support protocol version 2. I wonder if I should upgrade this with a package from a newer debian distribution or install from source (reluctantly, because then I would have to check for security updates myself instead of being able to rely on security.debian.org).