I use Linux 12.10 (Quantal Quetzal) on my netbook. No, I don't use Unity because it lags on netbooks, but I use Gnome Session fallback in order to have the Gnome desktop (little to no lag).
To install Gnome session fallback:
command line (
CTRL + T):
sudo apt-get install gnome-session-fallback
click on the little icon in the corner of the user:
From there you can choose Gnome Classic(no effects) It doesn't have lag