I found something this evening in passing that I wanted to pass on to the rest of you. It’s a small fix that will allow the Cube to function properly with the current setup of Feisty and the desktop effects. Currently you can get the wobbly windows but no Cube.
In any event, try the tip below to get the Cube to function if you’d like to stick with Compiz (vs Beryl).
gconftool-2 –type int –set /apps/compiz/general/screen0/options/hsize 4
gconftool-2 –type int –set /apps/compiz/general/screen0/options/number_of_desktops 1
Via: Ubuntu Tutorials