VirtualBox 4.3.12 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 4.3.12

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

VMM: fixed an occasional Guru Meditation (Mac OS X hosts only; bugs #12727, #12954)
VMM: fixed a rare condition that would fail to invalidate guest TLB entries or would invalidate them when not required (Windows hosts only)
VMM: fixed a VERR_NOT_SUPPORTED Guru Meditation seen with certain guests, e.g. OpenServer 5.0.7
VMM: more fixes for MSR emulation on certain hardware (tickets #12240, #12875)
GUI: fixed mouse positioning with mouse integration disabled and multiple guest screens (Windows hosts only; bug #9059)
GUI: fixed crash in VM manager (bug #12878)
GUI: fixed crash under rare conditions on entering/exiting fullscreen/seamless mode
Shared Clipboard: don't stop working after taking a snapshot (bug #12700)
AHCI: fixed a crash under rare circumstances
API: fixed a hang during VM shutdown under rare conditions
NAT: fixed generation of malformed ICMP error datagrams (4.3.10 regression)
NAT: fixed potential crash in DNS proxy
NAT Network: don't drop port forwarding rules after some time
NAT: fixed ARP cache corruption and network loss in Windows guest caused by iSCSI service activity
USB: improved check if a storage device is currently mounted to the host when the device is about to be attached to the VM (Mac OS X hosts only; #11038)
3D support: several fixes, including better support for Ubuntu 14.04
VRDP: fixed a potential crash on client disconnect (bug #12858)
VBoxSVC: fixed a race when a new client is started a few seconds after the last client terminated (Windows hosts only; bugs #11309, #12509)
VBoxSVC: fixed VirtualBox.xml registry corruption after VM renaming
VBoxSVC: fixed a potential crash caused by incorrect USB device filter (Mac OS X hosts only; #11038)
Windows hosts: partly support 32-bit COM on 64-bit systems
Windows host installer: implemented merge module (msm) support
Linux hosts: fixed dependency of boot script on older Debian systems (bug #12262)
Linux guests: fix symbolic link to shared folder helper (bug #12879)
Linux Additions: don't crash VBoxService during guest execute for users without a password (bug #12994)
Linux Additions: fixed a bug in guest execution where the guest process terminated with VERR_INTERRUPTED to the host

Install VirtualBox 4.3.12 on ubuntu 14.04/13.10/13.04/12.10

Open the terminal and run the following commands

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

gksudo gedit /etc/apt/sources.list

For ubuntu 14.04 users add the following line

deb trusty contrib

For ubuntu 13.10 users add the following line

deb saucy contrib

For ubuntu 13.04 users add the following line

deb raring contrib

For ubuntu 12.10 users add the following line

deb quantal contrib

If you are running ubuntu 12.04 add the following line

deb precise contrib

Save and exit the file

Now install PGP key using the following command

wget -q -O- | sudo apt-key add --

Update source list

sudo apt-get update

Install virtualbox

sudo apt-get install virtualbox-4.3

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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