Fixing Kali to Work

Upgrades

First things first

$ apt-get update
$ apt-get -y dist-upgrade

Now add to aptitude sources as per Kali 2015-06-17 notes, and when you have added the new sources, run

$ apt-get update

Now you'll be able to install stuff like xfce4.

To fix the windows manager to be xfce by default, first install xfce:

$ apt-get install -y desktop-base xfce4 xfce4-places-plugin xfce4-goodies

last two are optional.