Hi Victor. Simple way. You can do it manually. First generate a list of what you have installed on your system. You can do this by typing the following in the terminal. sudo dpkg --get-selections | grep '[[:space:]]install$' | \awk '{print $1}' > package_list copy your /home and /etc folder to a backup media. Re install ubuntu 12.04. Restore your backup (remember to set the correct premissions). Then run the following to reinstall all the program you had before. cat package_list | xargs sudo apt-get install Note that you might have to do some cleaning of the /etc and /home folder for incompatible settings. reference: http://askubuntu.com/questions/49869/how-to-roll-back-ubuntu-to-a-previous-version . Atenciosamente Alexandre de M. C. Santos Nam Myoho Renge Kyo