Following previous posts about installing Virtualbox, here’s the 3.1 update (currently 3.1.2).

If you have a previous version already installed you need to manually install the new one.


  • Go to System > Administration > Software Sources and Third-Party Software.
  • Add the following sources for Intrepid (check your distribution here)
  • Download and register Sun authentication key
wget -q -O- | sudo apt-key add -
  • Be sure your source list is updated
sudo apt-get update
  • Be sure you have dkms installed (so Virtualbox host kernel is automatically updated as you update your system kernel)
sudo apt-get install dkms
  • Install Virtualbox 3.1
sudo apt-get install virtualbox-3.1
  • Logoff and login again
  • Start Virtualbox at Applications > System Tools > Sun VirtualBox
  • If you want you can optionally register your VirtualBox installation
  • If you have a Windows Virtual Machine don’t forget to install the Guest Additions (after starting the virtual machine go to Devices > Install Guest Additions)