How do I use Gnome in Ubuntu 13.04? I tried the following from this site:

sudo apt-get install gnome-session-fallback

But it seems to be buggy, alt+tab doesn't even work and when I'm grabbing a particular window it grabs the one behind it instead. The gnome desktop feels faster on my machine and I find it easier to navigate with it, is there another way of using gnome in Ubuntu 13.04 aside from the method above? Thanks in advance!