Atualize seu Ubuntu já!!!!
Se você deseja atualizar seu Ubuntu para a última versão siga os passos abaixo:
Faça um backup do sources atual
sudo cp /etc/apt/sources.list /etc/apt/sources.list.ORIG
Edite o arquivo sources.list removendo o conteúdo atual e adicionando o novo
sudo gedit /etc/apt/sources.list
deb http://us.archive.ubuntu.com/ubuntu/ intrepid main restricted
deb-src http://us.archive.ubuntu.com/ubuntu/ intrepid main restricted
deb http://us.archive.ubuntu.com/ubuntu/ intrepid-updates main restricted
deb-src http://us.archive.ubuntu.com/ubuntu/ intrepid-updates main restricted
deb http://us.archive.ubuntu.com/ubuntu/ intrepid universe
deb-src http://us.archive.ubuntu.com/ubuntu/ intrepid universe
deb http://us.archive.ubuntu.com/ubuntu/ intrepid-updates universe
deb-src http://us.archive.ubuntu.com/ubuntu/ intrepid-updates universe
deb http://us.archive.ubuntu.com/ubuntu/ intrepid multiverse
deb-src http://us.archive.ubuntu.com/ubuntu/ intrepid multiverse
deb http://us.archive.ubuntu.com/ubuntu/ intrepid-updates multiverse
deb-src http://us.archive.ubuntu.com/ubuntu/ intrepid-updates multiverse
deb http://us.archive.ubuntu.com/ubuntu/ intrepid-backports main restricted universe multiverse
deb-src http://us.archive.ubuntu.com/ubuntu/ intrepid-backports main restricted universe multiverse
deb http://security.ubuntu.com/ubuntu intrepid-security main restricted
deb-src http://security.ubuntu.com/ubuntu intrepid-security main restricted
deb http://security.ubuntu.com/ubuntu intrepid-security universe
deb-src http://security.ubuntu.com/ubuntu intrepid-security universe
deb http://security.ubuntu.com/ubuntu intrepid-security multiverse
deb-src http://security.ubuntu.com/ubuntu intrepid-security multiverse
Para baixar o w32codecs e o libdvdcss adicione o repositório do Medibuntu
sudo wget http://www.medibuntu.org/sources.list.d/hardy.list -O /etc/apt/sources.list.d/medibuntu.list
Importe a chave gpg do repositório Medibuntu
sudo wget http://www.medibuntu.org/sources.list.d/intrepid.list -O /etc/apt/sources.list.d/medibuntu.list
Após estes procedimentos execute os comandos abaixo:
aptitude autoclean
aptitude update && aptitude safe-upgrade && aptitude dis-upgrade
Pronto seu sistema irá começar a se atualizar
