Available the latest version of VirtualBox 2.2 with significant new features.

- OVF (Open Virtualization Format / Open Virtualization Format) for importing and exporting virtual machines.
- Network mode with just the host.
- Hypervisor optimizations with significant performance improvements.
- Increased memory limit for VMs on 64-bit hosts to 16GB.
- VT-x/AMD-V enabled by default for new virtual machines.
- USB (OHCU and EHCU) enabled by default on new virtual machines (Qt only).
- Shared folders for virtual machines with Solaris and OpenSolaris operating systems.
- 3D acceleration in virtual machines also Linux and Solaris.
- New C API in addition to those already present C + +, Java, Python.

And many bugs fixed that can be viewed in its report changes

They have also published a voluminous manual pdf that you can find here

Installing VirtualBox

We add the repository, for which we opened our sources.list

sudo gedit /etc/apt/sources.list

and edit it by adding the following lines

#VirtualBox
deb http://download.virtualbox.org/virtualbox/debian intrepid non-free

Save and return to the terminal. Retrieve pgp key and installed with the following command

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

and finally update and install

sudo apt-get update
sudo apt-get install virtualbox-2.2

Update to new version

Just update and install the new version. The installation process takes care of removing the previous version.

sudo apt-get update
sudo apt-get install virtualbox-2.2

This tested on Ubuntu 8.10 and it works correctly.