fail to upgrade from 13.10 to 14.04

[contact97438]

Définition de nouveaux dépôts logiciels ... Sources provenant de tiers désactivées ...
It crashes after file 110 of 154, when calculating the modifications :
Impossible d'évaluer la mise à niveau
Back to 13.10

ProblemType: Bug
DistroRelease: Ubuntu 13.10
Package: ubuntu-release-upgrader-core 1:0.205.7
ProcVersionSignature: Ubuntu 3.11.0-14.21-generic 3.11.7
Uname: Linux 3.11.0-14-generic x86_64
ApportVersion: 2.12.5-0ubuntu2.2
Architecture: amd64
CrashDB: ubuntu
Date: Sat Jun 14 16:57:49 2014
InstallationDate: Installed on 2013-07-27 (321 days ago)
InstallationMedia: Ubuntu 13.10 "Saucy Salamander" - Alpha amd64 (20130717)
MarkForUpload: True
PackageArchitecture: all
SourcePackage: ubuntu-release-upgrader
UpgradeStatus: Upgraded to saucy on 2014-06-14 (0 days ago)
VarLogDistupgradeTermlog:

[Launchpad Janitor (janitor)]

Status changed to 'Confirmed' because the bug affects multiple users.