No escape

Ubuntu 11.04

Question: How to switch back to classic mode?
I don't like both of Unity and Gnome 3, but I can't find the classic one either, after installed Gnome 3.
The only choices are:
Fluxbox
Gnome shell
Recovery mode
User defined session
So how to get back the classic session?

Answer
Unfortunately, the only way back is either:
Downgrade with PPA Purge (will not work at this time).
Or
Reinstall.

Source: http://askubuntu.com/questions/39860/how-to-switch-back-to-classic-mode

Wonderful. I would add this to answers: Install Windows 7.