Comment 25 for bug 1063617

WARNING!!!!
Only do Andre's (desgua) workaround if you want Unity to get completely screwed.
Changing that setting rendered my session frozen and subsequent logins yielded only a desktop!

My unsatisfying path back to a usable system:

The default hotkeys to open a terminal worked so that I could open ccsm and switch out of flatfile mode.
This didn't fix the problem (no window decoration, HUD or bar at the left and top). I then re-enabled the Unity plugin.
Now I'm in the process of trying to reconfigure everything.
The settings in Unity are now "out of sync" with those of ccsm and changing, for example, "Launcher Icon Size" in the appearance window does nothing...
   anyone know how to restore things to normal?