package firefox 41.0.1+build2-0ubuntu0.14.04.1 failed to install/upgrade: package firefox is already installed and configured

[Luigi Dal Bosco]

the laptop turn off by it self during the updating

ProblemType: Package
DistroRelease: Ubuntu 14.04
Package: firefox 41.0.1+build2-0ubuntu0.14.04.1
ProcVersionSignature: Ubuntu 3.16.0-50.66~14.04.1-generic 3.16.7-ckt16
Uname: Linux 3.16.0-50-generic x86_64
AddonCompatCheckDisabled: False
ApportVersion: 2.14.1-0ubuntu3.15
AptdaemonVersion: 1.1.1-1ubuntu5.2
Architecture: amd64
BuildID: 20151001175956
Channel: Unavailable
CrashReports:
 600:0:116:103230:2015-10-07 22:15:53.038181543 +0200:2015-10-07 22:15:54.038181543 +0200:/var/crash/firefox.0.crash
 600:0:116:103286:2015-10-07 22:15:54.014181463 +0200:2015-10-07 22:15:54.006181462 +0200:/var/crash/chromium-codecs-ffmpeg-extra.0.crash
 600:0:116:103273:2015-10-07 22:15:54.022181463 +0200:2015-10-07 22:15:54.014181463 +0200:/var/crash/linux-image-3.16.0-50-generic.0.crash
Date: Wed Oct 7 22:15:54 2015
DuplicateSignature: package:firefox:41.0.1+build2-0ubuntu0.14.04.1:package firefox is already installed and configured
ErrorMessage: package firefox is already installed and configured
ForcedLayersAccel: False
IfupdownConfig:
 # interfaces(5) file used by ifup(8) and ifdown(8)
 auto lo
 iface lo inet loopback
InstallationDate: Installed on 2015-03-07 (214 days ago)
InstallationMedia: Ubuntu 14.04.2 LTS "Trusty Tahr" - Release amd64 (20150218.1)
IpRoute:
 default via 192.168.42.129 dev usb0 proto static
 192.168.42.0/24 dev usb0 proto kernel scope link src 192.168.42.184 metric 1
IwConfig:
 eth0 no wireless extensions.

 usb0 no wireless extensions.

 lo no wireless extensions.
NoProfiles: True
PulseList: Error: command ['pacmd', 'list'] failed with exit code 1: No PulseAudio daemon running, or not running as session daemon.
RelatedPackageVersions:
 dpkg 1.17.5ubuntu5.4
 apt 1.0.1ubuntu2.10
RfKill:

RunningIncompatibleAddons: False
SourcePackage: dpkg
Title: package firefox 41.0.1+build2-0ubuntu0.14.04.1 failed to install/upgrade: package firefox is already installed and configured
UpgradeStatus: No upgrade log present (probably fresh install)
dmi.bios.date: 04/02/2014
dmi.bios.vendor: American Megatrends Inc.
dmi.bios.version: G750JM.206
dmi.board.asset.tag: ATN12345678901234567
dmi.board.name: G750JM
dmi.board.vendor: ASUSTeK COMPUTER INC.
dmi.board.version: 1.0
dmi.chassis.asset.tag: No Asset Tag
dmi.chassis.type: 10
dmi.chassis.vendor: ASUSTeK COMPUTER INC.
dmi.chassis.version: 1.0
dmi.modalias: dmi:bvnAmericanMegatrendsInc.:bvrG750JM.206:bd04/02/2014:svnASUSTeKCOMPUTERINC.:pnG750JM:pvr1.0:rvnASUSTeKCOMPUTERINC.:rnG750JM:rvr1.0:cvnASUSTeKCOMPUTERINC.:ct10:cvr1.0:
dmi.product.name: G750JM
dmi.product.version: 1.0
dmi.sys.vendor: ASUSTeK COMPUTER INC.