VirtualBox on Debian-based distros

There is a really great write up on how to install and maintain the latest Oracle VirtualBox package on a Debian-based Linux distribution.

Here are the steps in a nutshell:

1. Add a line to the /etc/apt/sources.list file:

   deb http://download.virtualbox.org/virtualbox/debian lucid contrib non-free
   

2. Download and add the Oracle public key:

   wget -q http://download.virtualbox.org/virtualbox/debian/oracle_vbox.asc -O- | sudo apt-key add -
   

3. Install VirtualBox:

   sudo apt-get update
   sudo apt-get install virtualbox-4.0
   

That's basically it... Do refer to the link above for extra details and some caveats.