The Gnome 3 desktop User Interface lacks in certain Gnome 2 features like the Application menu, Shutdown button that many people were used to. This was a big gripe for all the loyal users for Fedora 16 or Fedora 15. Here is a solution to that problem:
- Use the Frippery Applications Menu to get back what you lost. It is described here https://extensions.gnome.org/extension/13/
- Visit the download page and download the RPM file corresponding to your distribution from http://intgat.tigress.co.uk/rmy/extensions/index.html
- Install the RPM file you downloaded
- Logout and log in again to see the menu.
You can fine tune your settings using the Advanced Settings tool (gnome-tweak tool).