Install
sudo add-apt-repository ppa:deb-thumbnailer-team/ppa
sudo apt-get update
sudo aptitude install deb-thumbnailer
In the mean time you can try out Alex’s script by installing the following .deb package and follow Alex’s instructions: -
“If you want to test it, simply install the deb, then log out and log back in (so that gconf gets refreshed). The easiest way to see something is opening nautilus -> ctr+L -> /var/cache/apt/archives .”