I am on a Power Mac OSX mountain lion. I ssh into an amazon aws ec2 instance. Then I want to ssh into the same aws ec2 instance. When I do any command in one connection it is echoed in the other connection (the app I'm using is Terminal). I'm trying to run a command in one directory and see what happens in another (and occasionally tail) using the other terminal connection. Except I can't because the echoing causes both terminal connections to stay in sync... i.e. one is just a mirror of what the other is doing.
How can I disable this. I tried hitting f9 to get a menu (bottom left of the window indicates f9 should call a menu) but this does nothing.