I used to use spaces a lot on Leopard and Snow Leopard, but the way it works on Lion is annoying for me, especially when it sends the full screen apps to a Space at the end of the row.
Is there a way to disable Spaces altogether on Lion?
The function "Spaces" doesn't exist any more.
This new Feature is called "Mission Control" in OS X Lion, and it's including the old Feature Spaces.
You cannot deactivate Mission Control, because it's an implemented way to handle FullScreen-Apps.
You have to live with that, but it can bee very helpful after a few days!