Upgrade to saucy fails

The updater suggests bad repositories or packages, but after removing all non-Ubuntu repositories and almost all packages from them (found by aptitude search ~o), the problem remains (and the messages in /var/log/dist-upgrade/main.log and /var/log/dist-upgrade/apt.log do not seem to suggest that the remaining two packages are involved in the problem).

Just in case the two remaining apps are actually relevant to the problem:

root@desktop:~# env - aptitude show ~o
Package: teamviewer
New: yes
State: installed
Automatically installed: no
Version: 8.0.17147
Priority: optional
Section: non-free/internet
Maintainer: Teamviewer GmbH <email address hidden>
Architecture: i386
Uncompressed Size: 81.9 M
Depends: libc6 (>= 2.4), libgcc1, libasound2, libfreetype6, zlib1g, libsm6, libxdamage1, libxext6, libxfixes3, libxrender1, libxtst6
Description: TeamViewer (Remote Control Application)
 TeamViewer is a remote control application. TeamViewer provides easy, fast and secure remote access to Linux, Windows PCs, and Macs.

 TeamViewer is free for personal use. You can use TeamViewer completely free of charge to access your private computers or to help your friends with their computer problems.

 To buy a license for commercial use, please visit http://www.teamviewer.com

Package: lastfm-scrobbler
New: yes
State: installed
Automatically installed: no
Version: 2.1.33-0lastfm1~quantal1
Priority: extra
Section: sound
Maintainer: Michael Coffey <email address hidden>
Architecture: amd64
Uncompressed Size: 3780 k
Depends: libavcodec53 (>= 6:0.8.3-1~) | libavcodec-extra-53 (>= 6:0.8.5), libavformat53 (>= 6:0.8.3-1~) | libavformat-extra-53 (>= 6:0.8.5), libavutil51 (>= 6:0.8.3-1~) | libavutil-extra-51 (>= 6:0.8.5), libc6 (>= 2.14), libgcc1 (>=
         1:4.1.1), libgpod4-nogtk (>= 0.6.0) | libgpod4 (>= 0.6.0), liblastfm-fingerprint1, liblastfm1, libphonon4 (>= 4:4.2.0), libqt4-dbus (>= 4:4.5.3), libqt4-network (>= 4:4.6.1), libqt4-sql (>= 4:4.5.3), libqt4-xml (>=
         4:4.5.3), libqtcore4 (>= 4:4.8.0), libqtgui4 (>= 4:4.7.0~beta1), libqtwebkit4 (>= 2.1.0~2011week13), libstdc++6 (>= 4.4.0), phonon, zlib1g (>= 1:1.1.4), gconf2 (>= 2.28.1-2)
Recommends: iceweasel | www-browser, libqt4-sql-sqlite
Description: music player for Last.fm personalized radio
 Last.fm is the flagship product from the team that designed the Audioscrobbler system, a music engine based on a massive collection of Music Profiles. Each music profile belongs to one person, and describes their taste in music.
 Last.fm uses these music profiles to make personalized recommendations, match you up with people who like similar music, and generate custom radio stations for each person.

 This package will allow you to play your personalized radio station streams from the Last.fm website. You will need a (free) account there to make use of this package.
Homepage: http://www.last.fm/

root@desktop:~#

ProblemType: Bug
DistroRelease: Ubuntu 13.04
Package: ubuntu-release-upgrader-core 1:0.192.13
ProcVersionSignature: Ubuntu 3.8.0-31.46-generic 3.8.13.8
Uname: Linux 3.8.0-31-generic x86_64
ApportVersion: 2.9.2-0ubuntu8.4
Architecture: amd64
CrashDB: ubuntu
Date: Mon Oct 21 01:11:56 2013
InstallationDate: Installed on 2013-08-11 (70 days ago)
InstallationMedia: Lubuntu 13.04 "Raring Ringtail" - Release amd64 (20130423.1)
MarkForUpload: True
PackageArchitecture: all
ProcEnviron:
 TERM=xterm
 PATH=(custom, no user)
 LANG=de_DE.UTF-8
 SHELL=/bin/bash
SourcePackage: ubuntu-release-upgrader
UpgradeStatus: Upgraded to raring on 2013-10-20 (0 days ago)