Comment 12 for bug 885070

I have suffered this issue without resoving it from a fresh install of Quantal which carried through the Raring upgrade. The exact same symptoms. I can confirm that berend's suggestion (#11) worked for me.

I thought that the the third destop size parameter in ccms -> General Options-> Desktop size-> Number of Desktops would be derived from the two above(Horizontal amd Veritical size), but its not. By putting it back to one the problem was solved. I have a straight 5 horizontal workaspace setup.