A linha 81 do seu arquivo /etc/apt/sources.list parece ter um problema. Verifique ela, ou coloque o conteúdo do arquivo aqui para podermos ajudá-lo.
bom dia colega, veja oque eu consegui se da pra falar algo
# See
http://help.ubuntu.com/community/UpgradeNotes for how to upgrade to
# newer versions of the distribution.
deb
http://br.archive.ubuntu.com/ubuntu/ feisty main restricted
deb-src
http://br.archive.ubuntu.com/ubuntu/ feisty main restricted
## Major bug fix updates produced after the final release of the
## distribution.
deb
http://br.archive.ubuntu.com/ubuntu/ feisty-updates main restricted
deb-src
http://br.archive.ubuntu.com/ubuntu/ feisty-updates main restricted
## 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://br.archive.ubuntu.com/ubuntu/ feisty universe
deb-src
http://br.archive.ubuntu.com/ubuntu/ feisty universe
## 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
## multiverse WILL NOT receive any review or updates from the Ubuntu
## security team.
deb
http://br.archive.ubuntu.com/ubuntu/ feisty multiverse
deb-src
http://br.archive.ubuntu.com/ubuntu/ feisty multiverse
## 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://br.archive.ubuntu.com/ubuntu/ feisty-backports main restricted universe multiverse
# deb-src
http://br.archive.ubuntu.com/ubuntu/ feisty-backports main restricted universe multiverse
deb
http://security.ubuntu.com/ubuntu feisty-security restricted main
deb-src
http://security.ubuntu.com/ubuntu feisty-security restricted main
deb
http://security.ubuntu.com/ubuntu feisty-security universe
deb-src
http://security.ubuntu.com/ubuntu feisty-security universe
deb
http://security.ubuntu.com/ubuntu feisty-security multiverse
#
# Trevino's Ubuntu feisty EyeCandy Repository (GPG key: 81836EBF - DD800CD9)
# Many eyecandy 3D apps like Beryl, Compiz, Fusion and kiba-dock snapshots
# built using latest available (working) sources from git/svn/cvs...
# wget
http://download.tuxfamily.org/3v1deb/DD800CD9.gpg -O- | sudo apt-key add -
deb
http://download.tuxfamily.org/3v1deb feisty eyecandy
deb-src
http://download.tuxfamily.org/3v1deb feisty eyecandy
deb cdrom:[Ubuntu 7.04 _Feisty Fawn_ - Release i386 (20070419)]/ feisty main restricted
deb
http://us.archive.ubuntu.com/ubuntu feisty restricted main universe
deb-src
http://us.archive.ubuntu.com/ubuntu feisty restricted main universe
deb
http://us.archive.ubuntu.com/ubuntu feisty-backports main restricted universe multiverse
deb-src
http://us.archive.ubuntu.com/ubuntu feisty-backports main restricted universe multiverse
deb
http://us.archive.ubuntu.com/ubuntu feisty-updates main restricted
deb-src
http://us.archive.ubuntu.com/ubuntu feisty-updates main restricted
deb-src
http://security.ubuntu.com/ubuntu feisty-security multiverse
“deb
http://www.getautomatix.com/apt feisty main”
“deb
http://www.getautomatix.com/apt feisty main”
“deb
http://www.getautomatix.com/apt feisty main”