I'm using cygwin on WinXP to connect via ssh to a linux system. The remote linux system consists of three virtual machines (VM) running in VirtualBox. The RSA key is different for each VM even though the IP is the same. When I try and connect via ssh from cygwin, the command waits 30 to 40 seconds, then drops back to the prompt with no error messages. From either DOS or OSX, it connects no problem. I would have expected a .ssh directory where I could poke around the known_hosts file, or just delete it and start new, but it's not there. At some point in the past, I could connect, but have no idea what sequence of actions I took to break it.
Is there some directory or file where I can reset ssh?