It says [here](http://www.webscopia.com/2011/10/unity-basics-and-keyboard-shortcuts-in-ubuntu-11-10-oneiric-ocelot/#Screenshots-9) and [here](https://askubuntu.com/questions/28086/what-are-unitys-keyboard-and-mouse-shortcuts) that the keyboard shortcut for expo mode of all windows, while zooming out on workspaces, is `Super+S`. 

However, when I push the command it just zooms out the workspaces; it does not do the expo mode. How can I fix this?

I'm on Ubuntu 11.10 with Unity.