Oracle released VirtualBox 4.0.6, a maintenance release of VirtualBox 4.0. that come to improves stability and fixes regressions. 
What`s New in this release:
Check the changelog page for more info about this release.
I- Installation :
Before to start remember to remove any previous version of virtualbox installed in your system.
– For Ubuntu 10.10 Maverick Meerkat, ubuntu 11.04 and linuxmint 10 :
To install VirtualBox in Ubuntu 10.10 , LinuxMint10, you need to add the the following repository.
1-Open terminal and copy the command bellow :
sudo add-apt-repository "deb http://download.virtualbox.org/virtualbox/debian maverick contrib"
2- Add the verification key, Copy this command :
wget -q http://download.virtualbox.org/virtualbox/debian/oracle_vbox.asc -O- | sudo apt-key add -
3- Now update and install :
sudo apt-get update && sudo apt-get install virtualbox-4.0
- You can also use this command to add the repository and install virtualbox 4.0.6 in debian based systems (Ubuntu 11.04 Natty, LinuxMint, Debian..)
sudo -v<br />echo "deb http://download.virtualbox.org/virtualbox/debian $(lsb_release -sc) contrib" | sudo tee -a /etc/apt/sources.list<br />wget -q http://download.virtualbox.org/virtualbox/debian/oracle_vbox.asc -O- | sudo apt-key add -<br />sudo apt-get update<br />sudo apt-get install virtualbox-4.0
- If you don`t want to install virtualbox from repository download the following .deb packages from this Link.
– For Other Linux distribution, download the packages from this Link.
II- Download and install the extension pack:
As i mentioned in my previous post ” VirtualBox4.0 introduces the Extension Pack mechanism which allows Oracle and 3rd parties to deliver additional functionality on top of the standard Open Source product. The Oracle VM VirtualBox Extension Pack, adds support for USB 2.0, RDP server and the PXE bootloader with E1000 support. “
To install the extension pack, First download the pack from this link :
Oracle_VM_VirtualBox_Extension_Pack-4.0.6-71344.vbox-extpack
After, open virtualbox and go to File–> Preference, then under extensions install the extension pack:
