*** This bug is a duplicate of bug 1056337 ***
    https://bugs.launchpad.net/bugs/1056337

This bug is NOT a duplicate of #1056337. I've already explained the reason here:
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1056337/comments/6

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https://bugs.launchpad.net/bugs/1060367

Title:
  visiting a certain page causes system freeze

Status in “firefox” package in Ubuntu:
  Confirmed

Bug description:
  When I visit http://www.voztele.com/ with firefox, it causes a system
  freeze.

  Here are the symtoms: at first the system responsiveness start
  decreasing (e.g., mouse becomes jerky), and after a few seconds the
  freeze becomes total: the desktop is completely still, mouse and
  keyboard don't respond at all, and cltr+alt+f1 does not work. I still
  manage to do sysreq+REISUB to reboot the system.

  The bug is clearly reproduceable by browsing again the same page with
  firefox. On the other hand, when trying to  visit the same page with
  Chromium, nothing bad happens.

  ProblemType: Bug
  DistroRelease: Ubuntu 12.04
  Package: firefox 15.0.1+build1-0ubuntu0.12.04.1
  ProcVersionSignature: Ubuntu 3.2.0-32.51-generic 3.2.30
  Uname: Linux 3.2.0-32-generic x86_64
  AddonCompatCheckDisabled: False
  AlsaVersion: Advanced Linux Sound Architecture Driver Version 1.0.24.
  ApportVersion: 2.0.1-0ubuntu13
  Architecture: amd64
  ArecordDevices:
   **** List of CAPTURE Hardware Devices ****
   card 0: PCH [HDA Intel PCH], device 0: STAC92xx Analog [STAC92xx Analog]
     Subdevices: 1/1
     Subdevice #0: subdevice #0
  AudioDevicesInUse:
   USER        PID ACCESS COMMAND
   /dev/snd/controlC0:  nicola     2256 F.... pulseaudio
  BuildID: 20120907231657
  Card0.Amixer.info:
   Card hw:0 'PCH'/'HDA Intel PCH at 0xe2e60000 irq 47'
     Mixer name : 'Intel CougarPoint HDMI'
     Components : 'HDA:111d76e7,10280492,00100102 
HDA:80862805,80860101,00100000'
     Controls      : 37
     Simple ctrls  : 13
  Channel: Unavailable
  Date: Tue Oct  2 19:46:42 2012
  EcryptfsInUse: Yes
  ForcedLayersAccel: False
  IfupdownConfig:
   auto lo
   iface lo inet loopback
  InstallationMedia: Ubuntu 11.04 "Natty Narwhal" - Release amd64 (20110427.1)
  IpRoute:
   default via 84.88.61.1 dev eth0  proto static 
   84.88.61.0/25 dev eth0  proto kernel  scope link  src 84.88.61.105  metric 1 
   84.88.63.128/27 dev wlan0  proto kernel  scope link  src 84.88.63.142  
metric 2 
   169.254.0.0/16 dev eth0  scope link  metric 1000
  PrefSources:
   prefs.js
   
[Profile]/extensions/{3d7eb24f-2740-49df-8937-200b1cc08f8a}/defaults/preferences/flashblock.js
  ProcEnviron:
   TERM=xterm
   PATH=(custom, user)
   LANG=en_US.UTF-8
   SHELL=/bin/bash
  Profiles: Profile0 (Default) - LastVersion=15.0.1/20120907231657 (In use)
  RelatedPackageVersions:
   rhythmbox-mozilla 2.96-0ubuntu4.2
   totem-mozilla     3.0.1-0ubuntu21.1
   icedtea-6-plugin  1.2-2ubuntu1.2
  RunningIncompatibleAddons: False
  SourcePackage: firefox
  UpgradeStatus: Upgraded to precise on 2012-08-27 (36 days ago)
  dmi.bios.date: 05/24/2011
  dmi.bios.vendor: Dell Inc.
  dmi.bios.version: A05
  dmi.board.name: 0GJF11
  dmi.board.vendor: Dell Inc.
  dmi.board.version: A01
  dmi.chassis.type: 9
  dmi.chassis.vendor: Dell Inc.
  dmi.modalias: 
dmi:bvnDellInc.:bvrA05:bd05/24/2011:svnDellInc.:pnLatitudeE6320:pvr01:rvnDellInc.:rn0GJF11:rvrA01:cvnDellInc.:ct9:cvr:
  dmi.product.name: Latitude E6320
  dmi.product.version: 01
  dmi.sys.vendor: Dell Inc.

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