Comment 5 for bug 563023

This is strange: the compiz package was correctly installed on my system, but I still experienced this bug.

Trying to --reinstall compiz did not fix anything.

However, by reading Marco's post, I noticed that compiz-gnome was installed along with compiz on his system. Strangely, compiz-gnome was not installed on my laptop, so I installed it manually:

sudo apt-get --reinstall install compiz compiz-gnome
Reading package lists... Done
Building dependency tree
Reading state information... Done
The following extra packages will be installed:
  compizconfig-backend-gconf
The following NEW packages will be installed:
  compiz-gnome compizconfig-backend-gconf
0 upgraded, 2 newly installed, 1 reinstalled, 0 to remove and 0 not upgraded.

The problem is solved now!