Upgrading ubuntu with some thing which can make more than one connection

Solution 1:

Yes it is, using a program that is called apt-fast, How to from this site http://www.webupd8.org/2010/08/you-can-now-install-apt-fast-from-ppa.html

First run theses commands in terminal, put one line in at a time and hit enter, enter password when prompted.

sudo add-apt-repository ppa:tldm217/tahutek.net
sudo apt-get update
sudo apt-get install apt-fast

After it is installed you can use apt-fast just like apt-get aka sudo apt-fast upgrade

They say it is a full syntax replacement, so try it with any situation you would use apt-get I haven't had it fail yet, but if something does go wrong try apt-fast clean , by default it has like 4 connections, I read here that you can customize it for more here http://nvarona.blogspot.com/2011/01/accelerating-ubuntu-apt-get.html

Solution 2:

I would go around the problem and use some download manager to download the 12.04 ISO with as many threads as you want or use apt-mirror to pull in a repo to a local mirror.

The latter is probably a better option.

Then you could use the local mirror or ISO as your upgrade repository.