HowTo keep your Ubuntu up-to-date

It is important to have the system updated, so that we have all the latest patches, security fixes and packages upgrades from the repositories.

First, navigate to: System --> Administration --> Software Sources

and check that all repositories are enabled.

Then, open the terminal: Applications --> Accessories --> Terminal
and type: (you need to provide the password here)
sudo apt-get update
sudo apt-get upgrade
sudo apt-get dist-upgrade

With this you are done with the system update.