Opened on 06/07/2014 at 09:17:28 PM

Closed on 07/15/2014 at 12:25:18 PM

#655 closed defect (worksforme)

Facebook freezes when opened on firefox

Reported by: Dr_Osama Assignee:
Priority: Unknown Milestone:
Module: Adblock-Plus-for-Firefox Keywords:
Cc: mapx, arthur,, trev Blocked By:
Blocking: Platform: Firefox
Ready: no Confidential: no
Tester: Verified working: no
Review URL(s):



Windows 7 SP1, Firefox 29.0.1,AdBlocker 2.6.3, Filter list (Easylist)

How to reproduce

  1. open firefox
  2. open

Observed behaviour

facebook page freezes for about 2 minutes when just opened then works just fine then freezes for another 2 minutes and so on.
When I disabled AdBlocker, it worked just fine.

Expected behaviour

It should block the ads without slowing the page!

Attachments (1)

Untitled.jpg (218.9 KB) - added by Dr_Osama on 06/07/2014 at 09:18:07 PM.
Screenshot of the page while freezing

Download all attachments as: .zip

Change History (15)

Changed on 06/07/2014 at 09:18:07 PM by Dr_Osama

Screenshot of the page while freezing

comment:1 Changed on 06/08/2014 at 07:28:09 AM by mapx

  • Cc mapx added

1.Are you using some custom filters for FB ?
2.What other addons are installed ? Did you try disabling all other addons and keep only ABP (and re-test) ?
3.Did you clear your cache (+cookies) ?
4.Did you scan your system for adware / malware ?
5.Try a new profile:
install ABP, re-test

comment:2 Changed on 06/12/2014 at 03:21:22 PM by arthur

comment:3 Changed on 06/13/2014 at 01:30:04 PM by John Percival

I too have this problem. As requested above, I created a new profile, installed ABP. Went to FB - no problems. Turned on bookmarks bar - opened new tab, went to FB - freezes.

comment:4 follow-up: Changed on 06/13/2014 at 01:32:13 PM by mapx

Are you using the default firefox theme ?

Last edited on 06/13/2014 at 01:32:24 PM by mapx

comment:5 Changed on 06/13/2014 at 03:17:43 PM by mapx

firefox freezing again even using the default theme

comment:6 Changed on 06/13/2014 at 03:18:35 PM by mapx

  • Cc arthur added

comment:7 in reply to: ↑ 4 Changed on 06/16/2014 at 08:16:28 AM by John Percival

Replying to mapx:

Are you using the default firefox theme ?


comment:8 Changed on 06/18/2014 at 09:48:14 AM by arthur

Someone reported that if you turn on the Facebook chat, it's working:

Can you verify that? I still cannot reproduce it.

Last edited on 06/18/2014 at 12:08:38 PM by arthur

comment:9 Changed on 06/18/2014 at 09:50:36 AM by mapx

another user (it's the same user TCCB) reported that by hiding the bookmarks bar it's working too

Last edited on 06/18/2014 at 09:51:47 AM by mapx

comment:10 Changed on 06/18/2014 at 09:53:41 AM by mapx

galacticninja also reported:

"Warning: Unresponsive script

A script on this page may be busy, or it may have stopped responding. You can stop the script now, or you can continue to see if the script will complete.

Script: "

comment:11 Changed on 06/18/2014 at 12:09:17 PM by arthur

He actually meant turning the chat on, not off:

comment:12 Changed on 06/18/2014 at 05:37:11 PM by saroyanm

  • Cc added

comment:13 Changed on 07/09/2014 at 12:38:11 PM by philll

  • Platform set to Firefox

comment:14 Changed on 07/15/2014 at 12:25:18 PM by trev

  • Cc trev added
  • Resolution set to worksforme
  • Status changed from new to closed

Judging by the forum discussion, this is clearly an issue with the EasyList filters or the scripts running on or both - but certainly not an Adblock Plus bug. The suspicion is that EasyList blocked something that made a script on go into an endless loop. Resolving as worksforme given that the issue apparently went away by itself, most likely due to a Facebook update.

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