Install VirtualBox 4.1.6 on Ubuntu 11.10

VrtualBox 4.1.6 has just been released. This release is intended for maintenance updates. In this new update you’ll find some improvements like:

• VRDP: fixed screen corruption.
• NAT: the interface stopped working after a lot of failed ICMP requests (bug #9371).
• E1000: fixed rare Windows 7 guest hangs, either at boot time or when reconfiguring the network card in unusual setups (bug #6223).
• ATA: fixed a possible crash during ATAPI passthrough with certain guests.
• ATA: improved compatibility with ancient Linux kernels.
• For detail information, you can refer to the change log.

So, this is how to install VirtualBox 4.1.6 on your Ubuntu 11.10.

1. Edit sources.list file:
   

   gksudo gedit /etc/apt/sources.list

2. Modify by adding this line:
   

   deb http://download.virtualbox.org/virtualbox/debian [your Ubuntu's code name] contrib

   Ex, for Oneiric user, use this command:
   

   deb http://download.virtualbox.org/virtualbox/debian oneiric contrib

   For Natty user, use this command:
   

   deb http://download.virtualbox.org/virtualbox/debian natty contrib

   For Maverick user, use this command:
   

   deb http://download.virtualbox.org/virtualbox/debian maverick contrib

   And so on,
3. Save and exit from the sources.list file:
   

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

4. Update your source list:
   

   sudo apt-get update

5. Finally, install VirtualBox:
   

   sudo apt-get install virtualbox-4.1

Note: to make sure your VirtualBox host kernel modules (vboxdrv, vboxnetflt, and vboxnetadp) are properly updated when you do the next apt-get upgrade, you have to install the dkms package. Use this command to install these modules:

sudo apt-get install dkms

That's all, hope it useful :)
Via ubuntugeek.