Public bug reported:

Firefox is very slow and unresponsive at times. When typing or navigating it 
would have a massive delay in responding any input.
It uses around 1GB to 1,8GB on avg. I usually have about 10 tabs open. Not too 
many.
I have now disabled all add-ons and extension. Doesnt make any difference

1) Ubuntu 16.04 LTS 64 bit
2)Firefox Web Browser 51.0.1+build2-0ubuntu0.16.04.2

ProblemType: Bug
DistroRelease: Ubuntu 16.04
Package: firefox 51.0.1+build2-0ubuntu0.16.04.2
Uname: Linux 4.6.5-040605-lowlatency x86_64
AddonCompatCheckDisabled: False
ApportVersion: 2.20.1-0ubuntu2.5
Architecture: amd64
AudioDevicesInUse:
 USER        PID ACCESS COMMAND
 /dev/snd/pcmC1D0c:   janusk     2325 F...m pulseaudio
 /dev/snd/pcmC1D0p:   janusk     2325 F...m pulseaudio
 /dev/snd/controlC1:  janusk     2325 F.... pulseaudio
 /dev/snd/controlC0:  janusk     2325 F.... pulseaudio
BuildID: 20170201180315
Channel: Unavailable
CurrentDesktop: Unity
Date: Thu Mar  2 11:42:22 2017
DefaultProfileExtensions: extensions.sqlite corrupt or missing
DefaultProfileIncompatibleExtensions: Unavailable (corrupt or non-existant 
compatibility.ini or extensions.sqlite)
DefaultProfileLocales: extensions.sqlite corrupt or missing
DefaultProfilePrefSources: prefs.js
DefaultProfileThemes: extensions.sqlite corrupt or missing
ForcedLayersAccel: False
IfupdownConfig:
 # interfaces(5) file used by ifup(8) and ifdown(8)
 auto lo
 iface lo inet loopback
InstallationDate: Installed on 2016-08-11 (203 days ago)
InstallationMedia: Ubuntu 16.04.1 LTS "Xenial Xerus" - Release amd64 (20160719)
IpRoute:
 default via 10.1.161.250 dev enp0s31f6  proto static  metric 100 
 10.1.5.59 via 10.1.161.250 dev enp0s31f6  proto dhcp  metric 100 
 10.1.161.0/24 dev enp0s31f6  proto kernel  scope link  src 10.1.161.167  
metric 100 
 169.254.0.0/16 dev enp0s31f6  scope link  metric 1000
ProcEnviron:
 LANGUAGE=en_ZA:en
 PATH=(custom, no user)
 XDG_RUNTIME_DIR=<set>
 LANG=en_ZA.UTF-8
 SHELL=/bin/bash
Profile1Extensions: extensions.sqlite corrupt or missing
Profile1IncompatibleExtensions: Unavailable (corrupt or non-existant 
compatibility.ini or extensions.sqlite)
Profile1Locales: extensions.sqlite corrupt or missing
Profile1PrefSources: prefs.js
Profile1Themes: extensions.sqlite corrupt or missing
Profile2IncompatibleExtensions:
 English (South Africa) Language Pack - langpack-en...@firefox.mozilla.org
 English (GB) Language Pack - langpack-en...@firefox.mozilla.org
 Default - {972ce4c6-7e08-4474-a285-3208198ce6fd}
Profile2Plugins:
 Google Talk Plugin - /opt/google/talkplugin/libnpgoogletalk.so 
(google-talkplugin)
 Google Talk Plugin Video Renderer - /opt/google/talkplugin/libnpo1d.so 
(google-talkplugin)
 f5 sam inspection host plugin - 
[Profile]/extensions/{972ce4c6-7e08-4474-a285-3208198ce6f1}/plugins/np_f5_inspection_host_x86_64.so
Profile2PrefSources: prefs.js
Profiles:
 Profile0 (Default) - LastVersion=48.0/20160728203720 (Out of date)
 Profile1 - LastVersion=9.0.1/2011122000 (Out of date)
 Profile2 (Default) - LastVersion=51.0.1/20170201180315 (In use)
RelatedPackageVersions: google-talkplugin 5.41.3.0-1
RunningIncompatibleAddons: True
SourcePackage: firefox
UpgradeStatus: No upgrade log present (probably fresh install)
dmi.bios.date: 04/20/2016
dmi.bios.vendor: LENOVO
dmi.bios.version: N1KET21W (1.08 )
dmi.board.asset.tag: Not Available
dmi.board.name: 20FJS29500
dmi.board.vendor: LENOVO
dmi.board.version: SDK0J40697 WIN
dmi.chassis.asset.tag: No Asset Information
dmi.chassis.type: 10
dmi.chassis.vendor: LENOVO
dmi.chassis.version: None
dmi.modalias: 
dmi:bvnLENOVO:bvrN1KET21W(1.08):bd04/20/2016:svnLENOVO:pn20FJS29500:pvrThinkPadT560:rvnLENOVO:rn20FJS29500:rvrSDK0J40697WIN:cvnLENOVO:ct10:cvrNone:
dmi.product.name: 20FJS29500
dmi.product.version: ThinkPad T560
dmi.sys.vendor: LENOVO

** Affects: firefox (Ubuntu)
     Importance: Undecided
         Status: New


** Tags: amd64 apport-bug xenial

-- 
You received this bug notification because you are a member of Desktop
Packages, which is subscribed to firefox in Ubuntu.
https://bugs.launchpad.net/bugs/1669321

Title:
  firefox slow

Status in firefox package in Ubuntu:
  New

Bug description:
  Firefox is very slow and unresponsive at times. When typing or navigating it 
would have a massive delay in responding any input.
  It uses around 1GB to 1,8GB on avg. I usually have about 10 tabs open. Not 
too many.
  I have now disabled all add-ons and extension. Doesnt make any difference

  1) Ubuntu 16.04 LTS 64 bit
  2)Firefox Web Browser 51.0.1+build2-0ubuntu0.16.04.2

  ProblemType: Bug
  DistroRelease: Ubuntu 16.04
  Package: firefox 51.0.1+build2-0ubuntu0.16.04.2
  Uname: Linux 4.6.5-040605-lowlatency x86_64
  AddonCompatCheckDisabled: False
  ApportVersion: 2.20.1-0ubuntu2.5
  Architecture: amd64
  AudioDevicesInUse:
   USER        PID ACCESS COMMAND
   /dev/snd/pcmC1D0c:   janusk     2325 F...m pulseaudio
   /dev/snd/pcmC1D0p:   janusk     2325 F...m pulseaudio
   /dev/snd/controlC1:  janusk     2325 F.... pulseaudio
   /dev/snd/controlC0:  janusk     2325 F.... pulseaudio
  BuildID: 20170201180315
  Channel: Unavailable
  CurrentDesktop: Unity
  Date: Thu Mar  2 11:42:22 2017
  DefaultProfileExtensions: extensions.sqlite corrupt or missing
  DefaultProfileIncompatibleExtensions: Unavailable (corrupt or non-existant 
compatibility.ini or extensions.sqlite)
  DefaultProfileLocales: extensions.sqlite corrupt or missing
  DefaultProfilePrefSources: prefs.js
  DefaultProfileThemes: extensions.sqlite corrupt or missing
  ForcedLayersAccel: False
  IfupdownConfig:
   # interfaces(5) file used by ifup(8) and ifdown(8)
   auto lo
   iface lo inet loopback
  InstallationDate: Installed on 2016-08-11 (203 days ago)
  InstallationMedia: Ubuntu 16.04.1 LTS "Xenial Xerus" - Release amd64 
(20160719)
  IpRoute:
   default via 10.1.161.250 dev enp0s31f6  proto static  metric 100 
   10.1.5.59 via 10.1.161.250 dev enp0s31f6  proto dhcp  metric 100 
   10.1.161.0/24 dev enp0s31f6  proto kernel  scope link  src 10.1.161.167  
metric 100 
   169.254.0.0/16 dev enp0s31f6  scope link  metric 1000
  ProcEnviron:
   LANGUAGE=en_ZA:en
   PATH=(custom, no user)
   XDG_RUNTIME_DIR=<set>
   LANG=en_ZA.UTF-8
   SHELL=/bin/bash
  Profile1Extensions: extensions.sqlite corrupt or missing
  Profile1IncompatibleExtensions: Unavailable (corrupt or non-existant 
compatibility.ini or extensions.sqlite)
  Profile1Locales: extensions.sqlite corrupt or missing
  Profile1PrefSources: prefs.js
  Profile1Themes: extensions.sqlite corrupt or missing
  Profile2IncompatibleExtensions:
   English (South Africa) Language Pack - langpack-en...@firefox.mozilla.org
   English (GB) Language Pack - langpack-en...@firefox.mozilla.org
   Default - {972ce4c6-7e08-4474-a285-3208198ce6fd}
  Profile2Plugins:
   Google Talk Plugin - /opt/google/talkplugin/libnpgoogletalk.so 
(google-talkplugin)
   Google Talk Plugin Video Renderer - /opt/google/talkplugin/libnpo1d.so 
(google-talkplugin)
   f5 sam inspection host plugin - 
[Profile]/extensions/{972ce4c6-7e08-4474-a285-3208198ce6f1}/plugins/np_f5_inspection_host_x86_64.so
  Profile2PrefSources: prefs.js
  Profiles:
   Profile0 (Default) - LastVersion=48.0/20160728203720 (Out of date)
   Profile1 - LastVersion=9.0.1/2011122000 (Out of date)
   Profile2 (Default) - LastVersion=51.0.1/20170201180315 (In use)
  RelatedPackageVersions: google-talkplugin 5.41.3.0-1
  RunningIncompatibleAddons: True
  SourcePackage: firefox
  UpgradeStatus: No upgrade log present (probably fresh install)
  dmi.bios.date: 04/20/2016
  dmi.bios.vendor: LENOVO
  dmi.bios.version: N1KET21W (1.08 )
  dmi.board.asset.tag: Not Available
  dmi.board.name: 20FJS29500
  dmi.board.vendor: LENOVO
  dmi.board.version: SDK0J40697 WIN
  dmi.chassis.asset.tag: No Asset Information
  dmi.chassis.type: 10
  dmi.chassis.vendor: LENOVO
  dmi.chassis.version: None
  dmi.modalias: 
dmi:bvnLENOVO:bvrN1KET21W(1.08):bd04/20/2016:svnLENOVO:pn20FJS29500:pvrThinkPadT560:rvnLENOVO:rn20FJS29500:rvrSDK0J40697WIN:cvnLENOVO:ct10:cvrNone:
  dmi.product.name: 20FJS29500
  dmi.product.version: ThinkPad T560
  dmi.sys.vendor: LENOVO

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