Install Virtualbox on Debian 7
I have had some problems getting backups (of VMs) to run on new Debian Desktop installations. Best practice seems to be as follows:
sudo apt-get install dkms
Use the latest from https://www.virtualbox.org/wiki/Linux_Downloads
sudo vi /etc/apt/sources.list
deb http://download.virtualbox.org/virtualbox/debian wheezy contrib
deb http://http.debian.net/debian/ wheezy-backports main contrib
wget -q https://www.virtualbox.org/download/oracle_vbox.asc -O- | sudo apt-key add –
sudo apt-get update
sudo apt-get install virtualbox-4.3