Sobrecarregamento em sources list

[Alexandre de Oliveira Moraes]

Ao tentar atualizar para Ubuntu 15.10 ele acusou um sobrecarregamento no etc/..../sources list, e não deixou atualizá-lo.

ProblemType: Bug
DistroRelease: Ubuntu 15.04
Package: ubuntu-release-upgrader-core 1:15.04.14.3 [origin: unknown]
ProcVersionSignature: Ubuntu 3.19.0-49.55-generic 3.19.8-ckt12
Uname: Linux 3.19.0-49-generic x86_64
ApportVersion: 2.17.2-0ubuntu1.8
Architecture: amd64
CrashDB: ubuntu
Date: Thu Feb 11 09:13:26 2016
InstallationDate: Installed on 2015-02-21 (354 days ago)
InstallationMedia: Ubuntu 14.10 "Utopic Unicorn" - Release amd64 (20141022.1)
PackageArchitecture: all
ProcEnviron:
 LANGUAGE=pt_BR:pt:en
 PATH=(custom, no user)
 LANG=pt_BR.UTF-8
 SHELL=/bin/bash
SourcePackage: ubuntu-release-upgrader
UpgradeStatus: Upgraded to vivid on 2016-02-11 (0 days ago)
VarLogDistupgradeAptlog:
 Log time: 2016-02-11 09:08:07.581856
 Log time: 2016-02-11 09:10:08.789862
 Log time: 2016-02-11 09:12:37.036368
 Log time: 2016-02-11 09:13:34.563445
VarLogDistupgradeTermlog: