how to can update your system in ubuntu ??

the system in ubuntu do'nt need a driver, liken't a microsoft which using a driver. sometimes a people think is my ubuntu can read my VGA driver or is ubuntu can play my mp3 player?? so, you need update yoyr system.
follow my instruction (this repository only in indonesia)

1. open your terminal, and the type sudo su, it can make you login as a root
2. type your password
3. open a source.list using text editor such as gedit by type gedit /etc/apt/source.list
4. bring a # character in any paragraph, if you dont do it, a system by automatically update from the source.
5. type this repository into your source.list and then save it.
6. type apt-get update then enter 

#mirror.its.ac.id (ITS, INHERENT)
deb http://mirror.its.ac.id/ubuntu intrepid main multiverse restricted universe
deb http://mirror.its.ac.id/ubuntu intrepid-security main multiverse restricted universe
deb http://mirror.its.ac.id/ubuntu intrepid-backports main multiverse restricted universe
deb http://mirror.its.ac.id/ubuntu intrepid-updates main multiverse restricted universe
deb http://mirror.its.ac.id/ubuntu intrepid-proposed main multiverse restricted universe

#kambing.ui.edu (UI, Telkom, Indosat, OpenIXP, INHERENT)
deb http://kambing.ui.edu/ubuntu intrepid main restricted universe multiverse
deb http://kambing.ui.edu/ubuntu intrepid-updates main restricted universe multiverse
deb http://kambing.ui.edu/ubuntu intrepid-security main restricted universe multiverse
deb http://kambing.ui.edu/ubuntu intrepid-backports main restricted universe multiverse
deb http://kambing.ui.edu/ubuntu intrepid-proposed main restricted universe multiverse

#mirror.cbn.net.id (OpenIXP)
deb http://ubuntu.cbn.net.id/Ubuntu intrepid main restricted universe multiverse
deb http://ubuntu.cbn.net.id/Ubuntu intrepid-updates main restricted universe multiverse
deb http://ubuntu.cbn.net.id/Ubuntu intrepid-security main restricted universe multiverse
deb http://ubuntu.cbn.net.id/Ubuntu intrepid-backports main restricted universe multiverse
deb http://ubuntu.cbn.net.id/Ubuntu intrepid-proposed main restricted universe multiverse

#komo.vlsm.org
deb http://komo.vlsm.org/ubuntu intrepid main restricted universe multiverse
deb http://komo.vlsm.org/ubuntu intrepid-updates main restricted universe multiverse
deb http://komo.vlsm.org/ubuntu intrepid-security main restricted universe multiverse
deb http://komo.vlsm.org/ubuntu intrepid-backports main restricted universe multiverse
deb http://komo.vlsm.org/ubuntu intrepid-proposed main restricted universe multiverse

#indika.net.id (OpenIXP)
deb http://ubuntu.indika.net.id/ intrepid main restricted universe multiverse
deb http://ubuntu.indika.net.id/ intrepid-updates main restricted universe multiverse
deb http://ubuntu.indika.net.id/ intrepid-security main restricted universe multiverse
deb http://ubuntu.indika.net.id/ intrepid-backports main restricted universe multiverse
deb http://ubuntu.indika.net.id/ intrepid-proposed main restricted universe multiverse

#ftp.itb.ac.id (ITB, INHERENT)
deb ftp://ftp.itb.ac.id/pub/ubuntu intrepid main restricted universe multiverse
deb ftp://ftp.itb.ac.id/pub/ubuntu intrepid-updates main restricted universe multiverse
deb ftp://ftp.itb.ac.id/pub/ubuntu intrepid-security main restricted universe multiverse
deb ftp://ftp.itb.ac.id/pub/ubuntu intrepid-backports main restricted universe multiverse
deb ftp://ftp.itb.ac.id/pub/ubuntu intrepid-proposed main restricted universe multiverse
if u use a jaunty you can replace it with intrepid.
update your system now!!