In a clean user account all these editors behave and none of the funny stuff happens. I have removed login items, preferences, my keybindings from my account to no avail.
I have been advised by the reseller where I bought my Air to contact AppleCare to see if they can help. I'm still thinking about it.
Did you upgrade your user account from Snow Leopard? Even though Apple allows you to upgrade the OS, it is never a good idea (in my experience). A clean install with a new user account is always the way to go for maximum stability. With a little shell scripting you can easily copy select .plists and other config files from your old ~/Application Support/Library to the new one and it makes migrating to the new account pretty painless.
Brandon