ssh protocol in 5.3

[Robin Becker]

I have just upgraded one of my systems from 4.9 to 5.3 and even after 
restoring my old .ssh folder it seems I cannot get ssh on a 4.9 system 
to use protocol 1 with the 5.3 system.

Am I being stupid or must I go through the pain of creating a whole new 
set of keys for protocol 2.

We use protocol 1 for legacy reasons ie we have a very old 
implementation of ssh on our win32 PCs.

I have tried various .ssh/config options, but nothing seems to help.
-- 
Robin Becker