Até agora a melhor list que arranjei.. ou seja que o JoaoRodrigues me arranjou!!! Obrigado JP
façam um sources.list.backup:
sudo cp /etc/apt/sources.list /etc/apt/sources.list.backupe substituam o que está na vossa sources.list por isto pelo grande texto que está ca abaixo.
para isso façam
sudo gedit /etc/apt/sources.list , apaguem o que está e façam copy+paste
deb http://pt.archive.ubuntu.com/ubuntu/ gutsy main restricted multiverse universe
deb-src http://pt.archive.ubuntu.com/ubuntu/ gutsy restricted main multiverse universe #Added by software-properties
## Major bug fix updates produced after the final release of the
## distribution.
deb http://pt.archive.ubuntu.com/ubuntu/ gutsy-updates main restricted multiverse universe
deb-src http://pt.archive.ubuntu.com/ubuntu/ gutsy-updates restricted main multiverse universe #Added by software-properties
## Uncomment the following two lines to add software from the 'universe'
## repository.
## N.B. software from this repository is ENTIRELY UNSUPPORTED by the Ubuntu
## team, and may not be under a free licence. Please satisfy yourself as to
## your rights to use the software. Also, please note that software in
## universe WILL NOT receive any review or updates from the Ubuntu security
## team.
# deb http://pt.archive.ubuntu.com/ubuntu/ gutsy universe
# deb-src http://pt.archive.ubuntu.com/ubuntu/ gutsy universe
## Uncomment the following two lines to add software from the 'backports'
## repository.
## N.B. software from this repository may not have been tested as
## extensively as that contained in the main release, although it includes
## newer versions of some applications which may provide useful features.
## Also, please note that software in backports WILL NOT receive any review
## or updates from the Ubuntu security team.
deb http://pt.archive.ubuntu.com/ubuntu/ gutsy-backports main restricted universe multiverse
deb-src http://pt.archive.ubuntu.com/ubuntu/ gutsy-backports main restricted universe multiverse #Added by software-properties
deb http://pt.archive.ubuntu.com/ubuntu/ gutsy-security main restricted multiverse universe
deb-src http://pt.archive.ubuntu.com/ubuntu/ gutsy-security restricted main multiverse universe #Added by software-properties
# w32codecs
# deb http://dpkg.u32.net/ubuntu gutsy vserver
# deb-src http://dpkg.u32.net/ubuntu gutsy vserver
deb http://pt.archive.ubuntu.com/ubuntu/ gutsy-proposed restricted main multiverse universe
deb-src http://pt.archive.ubuntu.com/ubuntu/ gutsy-proposed restricted main multiverse universe #Added by software-properties
# deb http://pt.archive.ubuntu.com/ubuntu/ gutsy restricted multiverse main universe
# deb-src http://pt.archive.ubuntu.com/ubuntu/ gutsy restricted multiverse main universe #Added by software-properties