deb ftp://ftp.itb.ac.id/pub/ubuntu/ quantal-proposed main restricted universe multiverse
deb ftp://ftp.itb.ac.id/pub/ubuntu/ quantal-security main restricted universe multiverse
deb ftp://ftp.itb.ac.id/pub/ubuntu/ quantal-updates main restricted universe multiverse
deb ftp://ftp.itb.ac.id/pub/ubuntu/ quantal main restricted universe multiverse

# Repo lokal untuk ubuntu 12.10 via Kambing

deb http://kambing.ui.ac.id/ubuntu/ quantal-proposed main restricted universe multiverse
deb http://kambing.ui.ac.id/ubuntu/ quantal-security main restricted universe multiverse
deb http://kambing.ui.ac.id/ubuntu/ quantal-updates main restricted universe multiverse
deb http://kambing.ui.ac.id/ubuntu/ quantal main restricted universe multiverse

# Repo lokal untuk ubuntu 12.10 via UKDW

deb http://repo.ukdw.ac.id/ubuntu quantal main restricted universe multiverse
deb http://repo.ukdw.ac.id/ubuntu quantal-updates main restricted universe multiverse
deb http://repo.ukdw.ac.id/ubuntu quantal-security main restricted universe multiverse
deb http://repo.ukdw.ac.id/ubuntu quantal-backports main restricted universe multiverse
deb http://repo.ukdw.ac.id/ubuntu quantal-proposed main restricted universe multiverse

# Repo lokal untuk ubuntu 12.10 via Komo

deb http://komo.padinet.com/ubuntu/ quantal-proposed main restricted universe multiverse
deb http://komo.padinet.com/ubuntu/ quantal-security main restricted universe multiverse
deb http://komo.padinet.com/ubuntu/ quantal-updates main restricted universe multiverse
deb http://komo.padinet.com/ubuntu/ quantal main restricted universe multiverse

Untuk cara mengganti repostory ubuntu 12.10, ikuti langkah-langkah berikut :
1. Buka terminal (CTRL + ALT + T), kemudian eksekusi perintah dibawah ini:

sudo nano /etc/apt/sources.list

2. Hapus semua alamat repository yang ada didalam file sources.list dan gantikan dengan salah satu repository lokal diatas.
3. Simpan dengan cara Ctrl + O + Enter, kemudian keluar dari nano dengan cara Ctrl + X.
4. Lakukkan update dengan cara mengeksekusi command berikut:

sudo apt-get update&&sudo apt-get upgrade&&sudo apt-get dist-upgrade

5. Selesai