Question: Everytime when I want to install the ubuntu, it calls me to download the ubuntu-12.04-wubi-amd64.tar.xz! Because of my poor network, it makes me crazy! How can I install the ubuntu 12.04 without downloading ubuntu-12.04-wubi-amd64.tar.xz?

Answer: 
If your network is really slow you might want to order one of the [Ubuntu CDs/DVDs](http://shop.canonical.com/index.php?cPath=17). You could also ask someone to download and burn the [DVD images](http://cdimage.ubuntu.com/dvd/current/) for you. There is also a mini-iso that has a "network installation" option which tends to download a little bit less. That one still downloads quiet a lot of data and is hard to get by as it is not an official option any more (as far as I know).
<http://nl.releases.ubuntu.com/12.04/ubuntu-12.04-wubi-amd64.tar.xz>

Hey dude Download it from here and save it. And you install ubuntu again then copy this file into you disks directory which is in C : ubuntu/disks. 

I hope it will help :)