Comment 5 for bug 788607

Compositing gives us a few useful features:
- real transparent backgrounds for windows, for example, the launcher and the dash
- antialiased shaped windows, for example the tooltips/contextual menus of the launcher
- easier access to window previews as used in the spread (= workspace switcher)

Losing it is going to be a problem I think.
Can you describe what kind of hardware you have, especially what graphics card you are using?