I have upgraded my gnome shell to 3.4 in Ubuntu 11.10 through

sudo add-apt-repository ppa:ricotz/testing 
sudo add-apt-repository ppa:gnome3-team/gnome3
sudo apt-get update && sudo apt-get dist-upgrade
sudo apt-get install gnome-shell

But it broke my system. Gnome shell is completely broken - When I login it just shows desktop wallpaper and nothing else.

And importantly Unity is also broken. Attaching the screenshot

Some main issues

1)Two menus are appearing now - Global menu as well as application menu
2)Icons on top-right panel are appearing weirdly
3)My Default Ambiance Theme also got screwed. Instead of black color menus, I am seeing white color menus.

How do I fix them? Or Do I have an option to revert back to original settings or will reinstalling Unity/Gnome Shell helps ?