Is there any way to save the order of spaces in Mission Control? Is there any way in Mountain Lion to preserve the order of spaces in Mission Control?

I use four different spaces for four fullscreen apps, and I like to keep them in a certain order so that I know where they all are in relation to each other.

The problem is that once these apps are quit, their spacial arrangement is lost, so I find that I'm always manually reordering them into the arrangement I like (since by default a new fullscreen app is tacked onto the end of the list of spaces).

In Snow Leopard and earlier (before Mission Control), it was possible to "bind" specific apps to specific spaces, so you could do things like always have Safari open in Space 2. With Mission Control, I don't see any way to do something equivalent.
What Jay said in a comment...
Uncheck the second box here: