Kububtu Sources /etc/apt/ ...

 /etc/apt/
---------------------------------------------

apt.conf.d
                              lots of config files here.

preferences.d
                               no files here

sources.list.d
                               dropbox.list --for source for dropbox files
                               dropbox.list.save
                               kubuntu-ppa-backports-quantal.list
                                  deb http://ppa.launchpad.net/kubuntu-ppa/backports/ubuntu quantal main
                                  deb-src http://ppa.launchpad.net/kubuntu-ppa/backports/ubuntu quantal main 
                               kubuntu-ppa-backports-quantal.list.save


trusted.gpg.d
                                                   no files here

sources.list
                                                    this file is all commented out....

# deb cdrom:[Kubuntu 12.10 _Quantal Quetzal_ - Release amd64 (20121017.1)]/ quantal main multiverse restricted universe

# See http://help.ubuntu.com/community/UpgradeNotes for how to upgrade to
# newer versions of the distribution.

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

## 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.

## 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.

## 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.


## 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 quantal partner
# deb-src http://archive.canonical.com/ubuntu quantal 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 quantal main
# deb-src http://extras.ubuntu.com/ubuntu quantal main

sources.list.save


trusteddb.gpg

                      encrypted file
trusted.gpg


trusted.gpg~




deb http://ppa.launchpad.net/kubuntu-ppa/backports/ubuntu quantal main
deb-src http://ppa.launchpad.net/kubuntu-ppa/backports/ubuntu quantal main