How can I go back to Ubuntu classic from Unity in 11.10.

[Adam Funk]

On 2011-10-19, compdoc wrote:

>>How can  I go back to Ubuntu classic from Unity in 11.10.
>
> There is something you can try. Install it and before logging in, select the
> alternate desktops in the list:
>
> sudo apt-get install gnome-session-fallback
>
> Not quite gnome2, but it's not unity...

What's the difference between that and gnome-shell (suggested
elsewhere in this thread)?