package ubuntu-release-upgrader-core 1:0.220.2 failed to install/upgrade: unable to securely remove '/usr/lib/ubuntu-release-upgrader/do-partial-upgrade.dpkg-new': Read-only file system

[Hilhender]

crash after update by software updater

ProblemType: Package
DistroRelease: Ubuntu 14.04
Package: ubuntu-release-upgrader-core 1:0.220.2
ProcVersionSignature: Ubuntu 3.13.0-34.60-generic 3.13.11.4
Uname: Linux 3.13.0-34-generic x86_64
NonfreeKernelModules: vtsspp sep3_15 pax fglrx
ApportVersion: 2.14.1-0ubuntu3.3
Architecture: amd64
CrashDB: ubuntu
Date: Sun Aug 24 22:30:30 2014
DuplicateSignature: package:ubuntu-release-upgrader-core:1:0.220.2:unable to securely remove '/usr/lib/ubuntu-release-upgrader/do-partial-upgrade.dpkg-new': Read-only file system
ErrorMessage: unable to securely remove '/usr/lib/ubuntu-release-upgrader/do-partial-upgrade.dpkg-new': Read-only file system
InstallationDate: Installed on 2014-08-21 (3 days ago)
InstallationMedia: Ubuntu 14.04.1 LTS "Trusty Tahr" - Release amd64 (20140722.2)
PackageArchitecture: all
SourcePackage: ubuntu-release-upgrader
Title: package ubuntu-release-upgrader-core 1:0.220.2 failed to install/upgrade: unable to securely remove '/usr/lib/ubuntu-release-upgrader/do-partial-upgrade.dpkg-new': Read-only file system
UpgradeStatus: No upgrade log present (probably fresh install)