Originariamente inviato da GunMan
credo che molto probabilmente c'è un problema con il sources.list magari postandone il contenuto si potrebbe capire cosa c'è che non va.

a prescindere, io commenterei le righe riferite al cd, se hai una connessione valida.

questo è il contenuto del file


deb cdrom:[Ubuntu 7.04 _Feisty Fawn_ - Release i386 (20070415)]/ feisty main restricted
deb http://it.archive.ubuntu.com/ubuntu/ edgy main restricted
deb-src http://it.archive.ubuntu.com/ubuntu/ edgy main restricted

## Major bug fix updates produced after the final release of the
## distribution.
deb http://it.archive.ubuntu.com/ubuntu/ edgy-updates main restricted
deb-src http://it.archive.ubuntu.com/ubuntu/ edgy-updates main restricted

## 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://it.archive.ubuntu.com/ubuntu/ edgy universe
# deb-src http://it.archive.ubuntu.com/ubuntu/ edgy 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://it.archive.ubuntu.com/ubuntu/ edgy-backports main restricted universe multiverse
# deb-src http://it.archive.ubuntu.com/ubuntu/ edgy-backports main restricted universe multiverse

deb http://security.ubuntu.com/ubuntu edgy-security main restricted
deb-src http://security.ubuntu.com/ubuntu edgy-security main restricted
# deb http://security.ubuntu.com/ubuntu edgy-security universe
# deb-src http://security.ubuntu.com/ubuntu edgy-security universe
deb http://www.telemail.fi/mlind/ubuntu edgy fonts
deb-src http://www.telemail.fi/mlind/ubuntu edgy fonts


cmq ho provato a commentare come hai detto tu e adesso sembra andare...siccome sono un neofita mi spieghi cos'è che ho fatto? ho disabilitato il lettore cd? e quando dovrei riabilitarlo?
grazie