Possible Duplicate:
How do I switch to Xubuntu?
I am currently running the vanilla Ubuntu 11.10 on my laptop. At first I liked the Unity desktop (the previous version I used was 10.04 LTS) and thought that I could live with it. But after about a week of usage, I can feel that it's causing some really annoying lags. So I switched to Unity 2D.
The performance was a little better but still, the system lags. Now I want to install XFCE and use it as my desktop environment. I was thinking that installing xubuntu-desktop would be able to do the job but I am afraid it will overwrite the unity desktop (which I still want to keep).
So basically I am asking how to install XFCE so that it will be an option in the DE at the login screen?
