As soon as you begin installing Ubuntu or being downloading packages, the number one question is, Why is this download taking so long?
The answer is simple, probably your mirror is not correctly set and its taking longer to download files. How to fix? simply follow these instructions
Go to System Settings
Then go to “Software & Updates”, select “Download from” and choose a location closer to you
You can either choose a Download server (categorized by countries) or click “Select Best Server” which will determine the best server for you (after running a few tests)
Note: If you are running Ubuntu Server without a GUI (aka X-Windows), then edit the file
to use your new download-mirrors