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firefox is slow or crashes on me lately I have done everything to fix this!

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  • Igcine ukuphendulwa ngu sanuthomas

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Lately my Firefox 26.0 has been crashing or freezing for about 5 to 20 seconds, I only see this freeze in Google searches, i have reset Firefox, ran my avast(av), i have windows 8.1, fast dsl and i have done the following also:

1. Restart your computer 2. Clear your cookies and cache 3. Restart Firefox in Safe Mode 4. Troubleshoot your plugins 5. Reinstall Firefox 6. Reset Firefox 7. Check for conflicts with your Internet security software 8. Scan your system for viruses and spyware 9. Check your hard drive and RAM for errors

Does anyone know why it does this, it just stated doing it abut two months ago, i have a bran new laptop and i don't run any other applications! I just surf the net thats it! Everything is up to day, clean, i clear cookies, etc with ccleaner, I have tested my internet speed, it is well over the super fast speed, no problems there! Like i said i only see this crash in Google! Now im not using Firefox Google, my home page is Google in Firefox, please help! :-(

Isisombululo esikhethiwe

I found yet another example of the "avast! Online Security" add-on causing hangups in Firefox, when searching on Google, this time on the avast forum. Please read this thread: avast! Online Security add-on causing lag?

RinaGomez, I would try again to disable the "avast! Online Security" in your Add-ons Extensions list again, but this time, after closing Firefox, restart the computer to make sure that that Firefox has been completely closed, then when the computer restarts, open Firefox and try again.

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All Replies (20)

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Hello RinaGomez, please follow the steps below to provide us crash IDs to help us learn more about your crash.

  1. Enter about:crashes in the Firefox address bar and press Enter. A Submitted Crash Reports list will appear, similar to the one shown below.
  2. Copy the 5 most recent Report IDs that start with bp- and paste them into your response here.


More information and further troubleshooting steps can be found in the Troubleshoot Firefox crashes (closing or quitting unexpectedly) article.

also, can you replicate the same behaviour if you boot the computer in Windows Safe mode with network support ?

in win 8 : hold Shift button and mash the F8 key, if you see the new recovery mode, choose See advanced repair options > Troubleshoot > Advanced options > Windows Startup Settings > click Restart button > Advanced Boot Options > choose Safe mode with networking.

(to enable F8 key for safe mode with networking in win 8, like 7 and vista, go : CTRL + SHIFT + ESC > File > Run new task > write cmd.exe in the run new task window > check mark the Create this task with administrative privileges > when you see the : C:\Windows\System32> continue and write the next command bcdedit /set {default} bootmenupolicy legacy > click Enter > you can see the Operation completed successfully. Now when you boot and hold the F8 you can see the Advanced Boot mode, safe mode with networking etc.)

(If works in Windows Safe mode then probably you have problem with other software, like security software or maybe a system driver, that is running on your computer).

thank you

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Report ID Date Submitted

bp-092a52d4-7c28-44bf-b9d1-ac3862131217 12/8/2013 10:27 AM 148dec3f-ffb8-43ec-b259-b078d435f9af 11/25/2013 10:59 PM

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But why does it only crash or hang in Google searches?? This will last anywhere from 5 to 30 seconds, then it will be ok until i do another search, then the same thing happens again, it does not completely crash, but comes around after a few seconds!

Thank you! :-)

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After you restarted in Firefox Safe Mode did you test google searches and did you still see the problem? Firefox Safe Mode turns off hardware acceleration and disables all extensions temporarily.

I'm asking because you have the "avast! Online Security 9.0.2006.53" extension and I found another user who reported a similar issue with google searches a couple of days ago, and he said, I think it's the Avast online security 9.0.2006.53 Plugin that is the culprit. See:

I would suggest going to the Firefox Add-ons Extensions list and disabling the "avast! Online Security 9.0.2006.53" extension temporarily. (See Disable or remove Add-ons for details). If that works then try updating your Avast software or contact Avast support.

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HI Alice!

OK I tried Firefox safe mode and it made it faster- it did Google searches with no problems, then i went back to regular mode and disabled avast in the extensions, and it was lagging again, i only have avast in my extensions thats it!

So it's not avast! I don't have any add-ons, and a few plugins, but they seem normal, here's the list:

adobe acrobat

intel identity protection technology (two of these)

real networks (real-player)- (all of them)

shock wave flash

silver light plugin

yahoo application state

Photo gallery

So is it one of these plugins? Thanks!

Okulungisiwe ngu Rina

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I am still testing and yes in Firefox safe mode in Google searches are fast with no freezes!

I guess i cant keep it in safe mode? I do need avast, and disabling avast in my extensions did not help it, so it must be a plugin? The list i gave you above i placed them all in ( ask to activate) is that ok? but that did not help it ?

So what now?

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If the problem goes away in Firefox Safe Mode then the likely cause is another extension or hardware acceleration, since all plugins remain enabled in Firefox Safe Mode. For more information see Troubleshoot extensions, themes and hardware acceleration issues to solve common Firefox problems

Your system information shows that you have these extensions:

avast! Online Security 9.0.2006.53
Bitdefender QuickScan
RealDownloader 1.3.3 

You could try disabling ALL of your extensions and restart Firefox, to see if the problem goes away when you run Firefox normally with all extensions disabled.

Okulungisiwe ngu AliceWyman

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If disabling all extensions doesn't help then disable hardware acceleration in Firefox:

  1. Click the orange Firefox button at the top left, then select the "Options" button, or, if there is no Firefox button at the top, go to Tools > Options.
  2. In the Firefox options window click the Advanced tab, then select "General".
  3. In the settings list, you should find the Use hardware acceleration when available checkbox , as shown below. Uncheck this checkbox and click OK.
  4. Now, restart Firefox and see if the problems persist.

Options - Advanced - Win1 23

Ref: Advanced panel - Accessibility, browsing, network, updates, and other advanced settings in Firefox

Okulungisiwe ngu AliceWyman

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Hi! I already unchecked the {hardware acceleration) that did not help!

IN my extensions i deleted everything but avast! But when i disable avast in my extensions that does not help! Again this freeze for a a few seconds is only in Google searches!

What i read online is there is a conflict with Firefox and Google that has not been fixed, seems many people are having this problem!

It might be a plugin, from my list above what do you think? ...and how do you delete a plugin, it only shows me how to -always activate, never activate, or ask to activate.

I already reset Firefox, reinstalled it, updated it, ran virus scans, in (boot) also, nothing im clean! also connected from different internet connections, that did not help!   what now?
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Does running in Firefox Safe Mode help or not?

P.S. Here's another example of Firefox problems that are solved by disabling the avast! Online Security extension:

  • /questions/979446 I am getting this unresponsive script message when googling and its causing firefox to freeze "chrome:/wrc/content/common/scripts/bal.js:854" - Any advice?

Okulungisiwe ngu AliceWyman

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In any case, if you want to troubleshoot your plugins, there's no need to uninstall them. Just go to the Firefox Add-ons Plugins list and change them all to "Never Activate".

P.S. You did say you tried a Firefox Reset right? That will reset preferences and remove all added extensions (except for global extensions that are installed for all profiles) while keeping important data . See Refresh Firefox - reset add-ons and settings

A Firefox reset doesn't remove cookies. You did say you cleared cookies? See Clear cookies and site data in Firefox

Another option is to create a new Firefox profile. See Profile Manager - Create, remove or switch Firefox profiles

Okulungisiwe ngu AliceWyman

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Isisombululo Esikhethiwe

I found yet another example of the "avast! Online Security" add-on causing hangups in Firefox, when searching on Google, this time on the avast forum. Please read this thread: avast! Online Security add-on causing lag?

RinaGomez, I would try again to disable the "avast! Online Security" in your Add-ons Extensions list again, but this time, after closing Firefox, restart the computer to make sure that that Firefox has been completely closed, then when the computer restarts, open Firefox and try again.

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Well good news!!

You where right, disabling avast in the extensions works, now my searches in Google are fast with no lags!-- the trick for me was restating my computer, never did that before! Works!

But, disabling avast in my extensions- will I still be protected? What changes will happen?

Thank you!!!!! :-)

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Also, where do i tell avast about this? Is there a fix for this? not being protected by avast now??

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This is only about the extension(s) that Avast add to Firefox and that aren't fully compatible with the current Firefox release. Avast will have to release an update for their extension. The Avast program itself will still function in the background and protect you.

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But am I less protected now in my Firefox searches ?

why does this only only lag in Google searches?? 

...and where do I write avast about this problem, are they aware of this?

Thank you!

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RinaGomez , You're very welcome! Glad you got Firefox working without those lags on google searches.

What I think you should do is to keep the "avast! Online Security" extension disabled for now and update your Avast software to the latest version, to see if that resolves the extension problem. Like cor-el mentioned, your Avast security program itself will still run in the background to protect you. Keeping Firefox and other software up-to-date will also help to guard you from many vulnerabilities as you browse the Web. (This Mozilla Support article has some safety tips: How to stay safe on the web)

Here's the link to Avast Support if you need more help updating your Avast software or if you have questions about their product:

You can also get help in the Avast forum for your product at

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OK, great, well i did a updated, nothing yet ...hope avast fixes this soon!

Thank you again!!!!


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Hey guys! ...I just thought i would give you a update. I made a support ticket for avast concerning this issue, they wrote me back saying i need to completely uninstall avast and reinstall it and that they are working on this fix, did not sound too promising! (working on this fix)

I have seen many people with this issue and and well over a year, wonder how long it will take them to correct this?

Take care, love Firefox even more!! :-)

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Thanks for posting an update, which may be helpful to other Firefox users who have run into the same problem with the "avast! Online Security" extension.

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