recently I have migrated Kubuntu and KDE and removed everything related to Gnome (with some exceptions of course). I've read some and learnt that Kubuntu has its own repositories. So, what I wonder is in what manner I have to change my repository list. I mean which part of my list should be discarded and which parts should be kept. Here is my sources.list:

# deb cdrom:[Ubuntu 12.04 LTS _Precise Pangolin_ - Release amd64 (20120425)]/ dists/precise/main/binary-i386/



# deb cdrom:[Ubuntu 12.04 LTS _Precise Pangolin_ - Release amd64 (20120425)]/ dists/precise/restricted/binary-i386/

# deb cdrom:[Ubuntu 12.04 LTS _Precise Pangolin_ - Release amd64 (20120425)]/ precise main restricted

deb-src http://archive.ubuntu.com/ubuntu precise main restricted #Added by software-properties



# See http://help.ubuntu.com/community/UpgradeNotes for how to upgrade to

# newer versions of the distribution.

deb http://tr.archive.ubuntu.com/ubuntu/ precise main restricted

deb-src http://tr.archive.ubuntu.com/ubuntu/ precise restricted main multiverse universe #Added by software-properties



## Major bug fix updates produced after the final release of the

## distribution.

deb http://tr.archive.ubuntu.com/ubuntu/ precise-updates main restricted

deb-src http://tr.archive.ubuntu.com/ubuntu/ precise-updates restricted main multiverse universe #Added by software-properties



## N.B. software from this repository is ENTIRELY UNSUPPORTED by the Ubuntu

## team. Also, please note that software in universe WILL NOT receive any

## review or updates from the Ubuntu security team.

deb http://tr.archive.ubuntu.com/ubuntu/ precise universe

deb http://tr.archive.ubuntu.com/ubuntu/ precise-updates 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://tr.archive.ubuntu.com/ubuntu/ precise multiverse

deb http://tr.archive.ubuntu.com/ubuntu/ precise-updates multiverse



## 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://tr.archive.ubuntu.com/ubuntu/ precise-backports main restricted universe multiverse

deb-src http://tr.archive.ubuntu.com/ubuntu/ precise-backports main restricted universe multiverse #Added by software-properties



deb http://security.ubuntu.com/ubuntu precise-security main restricted

deb-src http://security.ubuntu.com/ubuntu precise-security restricted main multiverse universe #Added by software-properties

deb http://security.ubuntu.com/ubuntu precise-security universe

deb http://security.ubuntu.com/ubuntu precise-security multiverse



## Uncomment the following two lines to add software from Canonical's

## 'partner' repository.

## This software is not part of Ubuntu, but is offered by Canonical and the

## respective vendors as a service to Ubuntu users.

deb http://archive.canonical.com/ubuntu precise partner

# deb-src http://archive.canonical.com/ubuntu precise partner



## This software is not part of Ubuntu, but is offered by third-party

## developers who want to ship their latest software.

deb http://extras.ubuntu.com/ubuntu precise main

# deb-src http://extras.ubuntu.com/ubuntu precise main

deb http://tr.archive.ubuntu.com/ubuntu/ precise-proposed restricted main multiverse universe