Since upgrade from Quantal to raring i am not recieving any updates. For example firefox package - I have version 17 installed and apt-get update && apt-get upgrade does not find updates.

And output from show-versions:

fanys@fanys-netbook:~$ apt-show-versions firefox
firefox 17.0+build2-0ubuntu0.12.10.1 newer than version in archive
fanys@fanys-netbook:~$ apt-show-versions unity
unity/raring uptodate 6.12.0-0ubuntu1

I tried to remove contents of /var/lib/apt/lists/ and redo package refresh(apt-get update). But still same issue. /etc/apt/sources.list contents:

# See http://help.ubuntu.com/community/UpgradeNotes for how to upgrade to
# newer versions of the distribution.
deb http://cz.archive.ubuntu.com/ubuntu/ raring main restricted
deb-src http://cz.archive.ubuntu.com/ubuntu/ raring main restricted

## Major bug fix updates produced after the final release of the
## distribution.
deb http://cz.archive.ubuntu.com/ubuntu/ raring-updates main restricted
deb-src http://cz.archive.ubuntu.com/ubuntu/ raring-updates main restricted

## 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://cz.archive.ubuntu.com/ubuntu/ raring universe
deb-src http://cz.archive.ubuntu.com/ubuntu/ raring universe
deb http://cz.archive.ubuntu.com/ubuntu/ raring-updates universe
deb-src http://cz.archive.ubuntu.com/ubuntu/ raring-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://cz.archive.ubuntu.com/ubuntu/ raring multiverse
deb-src http://cz.archive.ubuntu.com/ubuntu/ raring multiverse
deb http://cz.archive.ubuntu.com/ubuntu/ raring-updates multiverse
deb-src http://cz.archive.ubuntu.com/ubuntu/ raring-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://security.ubuntu.com/ubuntu raring-security main restricted
deb-src http://security.ubuntu.com/ubuntu raring-security main restricted
deb http://security.ubuntu.com/ubuntu raring-security universe
deb-src http://security.ubuntu.com/ubuntu raring-security universe
deb http://security.ubuntu.com/ubuntu raring-security multiverse
deb-src http://security.ubuntu.com/ubuntu raring-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 raring partner
deb-src http://archive.canonical.com/ubuntu raring 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 raring main
deb-src http://extras.ubuntu.com/ubuntu raring main
deb http://cz.archive.ubuntu.com/ubuntu/ raring-proposed main universe restricted multiverse
deb http://cz.archive.ubuntu.com/ubuntu/ raring-backports main universe restricted multiverse

I have no updates for 4 days of dist-upgrade. There is one package kept in actual version: libexttextcat-data

Thanks in advance