sudo su
chmod 777 -R /etc/apt/sources.list
deb http://repo.ugm.ac.id/ubuntu/ karmic main restricted universe multiverse
deb http://repo.ugm.ac.id/ubuntu/ karmic-updates main restricted universe multiverse
deb http://repo.ugm.ac.id/ubuntu/ karmic-security main restricted universe multiverse
deb http://kambing.ui.edu/ubuntu karmic main restricted universe multiverse
deb http://kambing.ui.edu/ubuntu karmic-updates main restricted universe multiverse
deb http://kambing.ui.edu/ubuntu karmic-security main restricted universe multiverse
deb http://kambing.ui.edu/ubuntu karmic-backports main restricted universe multiverse
deb http://kambing.ui.edu/ubuntu karmic-proposed main restricted universe multiverse