Firefox crashes while using youtube

[Daniele]

Crash is systematic even in safe mode.
Crashes also in Facebook.

ProblemType: Bug
DistroRelease: Ubuntu 14.04
Package: firefox 40.0.3+build1-0ubuntu0.14.04.1
ProcVersionSignature: Ubuntu 3.13.0-64.104-generic 3.13.11-ckt26
Uname: Linux 3.13.0-64-generic i686
NonfreeKernelModules: nvidia
AddonCompatCheckDisabled: False
ApportVersion: 2.14.1-0ubuntu3.13
Architecture: i386
AudioDevicesInUse:
 USER PID ACCESS COMMAND
 /dev/snd/controlC0: daniele 2451 F.... pulseaudio
BuildID: 20150826185949
Channel: Unavailable
CurrentDesktop: Unity
Date: Sat Sep 19 11:05:42 2015
ForcedLayersAccel: False
IpRoute:
 default via 192.168.0.1 dev eth1 proto static
 192.168.0.0/24 dev eth1 proto kernel scope link src 192.168.0.2 metric 1
IwConfig:
 lo no wireless extensions.

 eth1 no wireless extensions.
MostRecentCrashID: bp-453181f5-3986-4818-9be9-c54c62150919
Plugins:
 IcedTea-Web Plugin (using IcedTea-Web 1.5 (1.5-1ubuntu1)) - /usr/lib/jvm/java-7-openjdk-i386/jre/lib/i386/IcedTeaPlugin.so (icedtea-7-plugin)
 Gnome Shell Integration - /usr/lib/mozilla/plugins/libgnome-shell-browser-plugin.so (gnome-shell)
 Shockwave Flash - /usr/lib/flashplugin-installer/libflashplayer.so
PrefSources:
 prefs.js
 user.js
Profiles: Profile0 (Default) - LastVersion=40.0.3/20150826185949 (In use)
RelatedPackageVersions:
 icedtea-7-plugin 1.5-1ubuntu1
 gnome-shell 3.10.4-0ubuntu5.2
RfKill:

RunningIncompatibleAddons: True
SourcePackage: firefox
UpgradeStatus: Upgraded to trusty on 2014-04-19 (517 days ago)
WpaSupplicantLog:

dmi.bios.date: 04/19/2013
dmi.bios.vendor: American Megatrends Inc.
dmi.bios.version: 1004
dmi.board.asset.tag: To be filled by O.E.M.
dmi.board.name: P8H61-M LX3 PLUS R2.0
dmi.board.vendor: ASUSTeK COMPUTER INC.
dmi.board.version: Rev X.0x
dmi.chassis.asset.tag: Asset-1234567890
dmi.chassis.type: 3
dmi.chassis.vendor: Chassis Manufacture
dmi.chassis.version: Chassis Version
dmi.modalias: dmi:bvnAmericanMegatrendsInc.:bvr1004:bd04/19/2013:svnSystemmanufacturer:pnSystemProductName:pvrSystemVersion:rvnASUSTeKCOMPUTERINC.:rnP8H61-MLX3PLUSR2.0:rvrRevX.0x:cvnChassisManufacture:ct3:cvrChassisVersion:
dmi.product.name: System Product Name
dmi.product.version: System Version
dmi.sys.vendor: System manufacturer

[Launchpad Janitor (janitor)]

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

[Paul White (paulw2u)]

Thank you for taking the time to report this bug and helping to make Ubuntu better. We are sorry that we do not always have the capacity to look at all reported bugs in a timely manner. There have been many changes in Ubuntu since that time you reported the bug and your problem may have been fixed with some of the updates. It would help us a lot if you could test it on a currently supported Ubuntu version.

When you test it and it is still an issue, kindly upload the updated logs by running only once:

apport-collect 1497525

and any other logs that are relevant for this particular issue.

(Please don't confirm your own bugs unless asked to do so my a developer)

[Launchpad Janitor (janitor)]

[Expired for firefox (Ubuntu) because there has been no activity for 60 days.]