This is Gnome3 configured to look very much like Gnome2. The primary differences are that "System Settings" (and some other things like printer configuration) moved to the "gear" at the far right of the top bar and you need to use <ALT>-right-mouse to add shortcuts to the top bar.
The <ALT>-right-mouse may only work with Gnome Classic (selected when you log in).
sudo apt-get install gnome-session-fallback
This is Gnome3 configured to look very much like Gnome2. The primary differences are that "System Settings" (and some other things like printer configuration) moved to the "gear" at the far right of the top bar and you need to use <ALT>-right-mouse to add shortcuts to the top bar.
The <ALT>-right-mouse may only work with Gnome Classic (selected when you log in).