Sameer Butt: Ubuntu 12.04 Final x86) ISO Full Mediafire Download Link

Super-fast, easy to use and free, the Ubuntu operating system powers millions of desktops, netbooks and servers around the world. Ubuntu does everything you need it to. It'll work with your existing PC files, printers, cameras and MP3 players. And it comes with thousands of free apps.

Installation of a Netboot image is the same as installing from CD Ubuntu Alternate, only the packages will be downloaded from the network rather than from disk. After installing the base system is proposed to choose to install the recommended set of packages such as ubuntu-desktop, ubuntu-server, kubuntu-desktop, and so on. At the end of the list, there is an item Manual Package Selection. Selecting this item starts aptitude and invited to choose the right packages to install. After this is done installing them on a network with pre-selected a mirror, and then will install the boot loader GRUB. Because of this you will always have the latest software version at the time of installation. Not recommended for installation over a network if you have a slow Internet.

The new kernel based on Linux 3.2.14 kernel with patches from Ubuntu:
LibreOffice version 3.5.2.
Unity version 5.10.
Firefox 11.
GTK3 3.4.1.
GCC 4.6.3.
Python 2.7.3 and 3.2.3.
X.org 1.11 and Mesa 8.0.2.

More information about the changes and innovations:
Major changes in the Desktop-version:
Now, in Unity is HUD - a revolutionary new implementation of a menu that includes many features (as in krunner of KDE), and contains a menu of active window.
The standard media player is Rhythmbox, integrated into the Ubuntu One Music Store.
It is now possible to change your Unity through the menu as you want.
Tighter integration into Nautilus Unity.
Improved energy efficiency for USB and PCI-devices.
Now when you install software from the Software Center will automatically put all the language packs, as appropriate for your location.
Support ClickPad'ov (touchpads in Macbook).
Gnome updated to version 3.4.1.
Ubuntu One:
Added a special "panel" with a variety of settings to Ubuntu One.
Full support for proxy.
Music store integrated in Rhythmbox.
Removed synchronization of contacts.
Ubuntu Server:
The work on OpenStack Esxxx.
A new component of OpenStack - Keystone.
Available Zentyal.
acpid is included in the standard way.
KVM has been updated to version 1.0.
OpenMPI 1.5 is available for ARM.
Kubuntu:
KDE 4.8.
Amarok 2.5.
Calligra Suite 2.4.
Telepathy-KDE Instant Messager 0.3.
Rekonq 0.9.
GUI for package management - Muon Suite 1.3.
Xubuntu:
Pavucontrol (PulseAudio) on top of xfce4-mixer.
Multiple changes in appearance.

Minimum system requirements:
Processor: Pentium IV 3GHz
RAM: 1Gb
Video Card: 512Mb

Recommended system requirements:
Processor: Core 2 Duo 2.2Ghz or higher
RAM: 2Gb
Video Card: 1Gb