VirtualBox 4.1.16 released and ubuntu installation instructions included

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VirtualBox is a powerful x86 and AMD64/Intel64 virtualization product for enterprise as well as home use. Not only is VirtualBox an extremely feature rich, high performance product for enterprise customers, it is also the only professional solution that is freely available as Open Source Software under the terms of the GNU General Public License (GPL) version 2.

What is new in VirtualBox 4.1.16

This is a maintenance release. The following items were fixed and/or added:

VMM: fixed a Guru Meditation VERR_ACCESS_DENIED with certain guests (bugs #7589, #8247)
VMM: fixed a Guru Meditation VERR_PAGE_TABLE_NOT_PRESENT with Ubuntu 32-bit guests with nested paging enabled on AMD CPUs (bug #10183)
VMM: preserve segment limits and attributes when switching to unreal mode required for some legacy guests to work properly (VT-x without unrestricted guest execution only; bug #9941)
VMM: fixed a VM hang after a resume from pause / savestate with SMP guests in rare cases
3D Support: several fixes for the Windows WDDM video driver crash
NAT: fixed a crash on attempt to process ICMP datagram under some circumstances (bug #10527)
Host-only Networking: lifted the maximal number of interfaces to 128 on Linux and Mac OS X hosts (there is no such limitation for Solaris and Windows hosts)
EFI: fixed wrong SEC/PEI Core entry point calculation (bug #10531)
VRDP: fixed a display update problem (bug #10503)
Main: set the proper VM state if savestate failed for some reason (bug #6189)
Main: more useful error message if a medium is inaccessible
VBoxManage: fixed controlvm savestate if the VM is already paused
Mac OS X hosts: addressed issues running on Mountain Lion Preview 3 (bug #10267)
Linux hosts: Linux 3.4 compile fixes
Linux hosts: fixed wrong help path in some rpm-based packages (bug #10418)
Guest Additions: fixed handling of custom environment variables during VBoxManage guestcontrol execute (bug #10581)
Windows Additions: fixed guest driver crash of VBoxSF in certain cases (4.1.10 regression, bug #10408)
Windows Additions: don't load the WDDM driver if 3D support is not available for Windows 8 guests to keep the guest maintainable in that case (still better to miss some features than providing a blank screen)
Solaris Additions: added support for X.org Server 1.11 and 1.12

Install VirtualBox 4.1.16 in ubuntu 12.04

Open the terminal and run the following commands

You need to edit /etc/apt/sources.list

gksudo gedit /etc/apt/sources.list

Add the following line

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

If you are running ubuntu 11.10 add the following line

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

Save and exit the file

Now install PGP key using the following command

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

Update source list

sudo apt-get update

Install virtualbox

sudo apt-get install virtualbox-4.1

If you have problem with the above PPA you can download .deb package from here.Once you have deb package you can double click on it to install this package.

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