Why is my Firefox 3 so slow??

  • Question
  • Updated 1 year ago
Why is my Firefox3 so slow? I have all the updates, did a full virus and spyware scan (everything was clean), and yet it takes at least a minute for my homepage, which is just google to load. I noticed that Firefox has been getting increasingly slower for me, but now it's ridiculous that it has trouble loading google!
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  • frustrated

Posted 6 years ago

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Thomas

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Is it as slow when you run Firefox in Safe Mode?
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Siena Emilia

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I find that now and then I Firefox does not load properly, takes forever, refuses to cooperate, and after months of mystery, it appears to be related to my router! My router is set up with a passkey and if I delete it and enter it manually, poof, everything falls into place. Maybe this will help someone else. it is very possible that it is not Firefox that is intrinsically slow but something "holding it back."
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cjescool

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omg this helped me thanks!!
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cjescool

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omg this helped me thanks!!
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cjescool

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omg this helped me. thanks!!
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have your tried the fasterfox 3.0.3 extension?
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Endolith

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Isn't that one of the top 5 add-ons that slows down Firefox?
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I'm running redhat linux firefox 3.0.6. It has a problem with slow scrolling, slow rendering (of javascript heavy pages perhaps), and it grabs the CPU when doing these things. This is very annoying because firefox 2 was completely fine. now i want to go back to it, but i'm worried about config changes that may have occurred in the "upgrade" that will be a pain to reverse.

:p
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Finanzas

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You may find https://addons.mozilla.org/en-US/fire... useful for unnecessary javascript on pages.
Also for slow scrolling, install https://addons.mozilla.org/en-US/fire... then get the userscript that removes position: fixed backgrounds - http://userscripts.org/scripts/show/4...
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David A.

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I had this problem a few times. Each time I found it was do to having the history browser open behind my other windows, once closed Firefox wasn't so slow anymore.
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People are talking about Mozilla slow when working.

I don't have that problem. My problem is that it takes two to three minutes to boot up. None of my other major programs take more than a few seconds when I click on the icon.

Anybody else having this problem?
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Ron Flori

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I take a nap when firefox is opening. It's appeal in the beginning was being so much quicker than IE. I do nto have many add ons and have eliminated ones I never used. Some sites also eat it up. I have had readings over 400,000 k with two tabs open. Open task manager and watch CPU usage as well as memory. I also wondr if microsoft has anything to do with slowing it up?
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Joe von Rodeck

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yes, slow and sometimes doesn't load at all.
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Joe von Rodeck

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yes, slow and sometimes doesn't load at all.
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Lawrence Hemingway

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just get Google Chrome. It opens like any other programs-fast. When Mozila will see people leave the browser in droves will fix the problem. I think it is all the extensions it checks and updates before it opens the browser.
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Xx0.0xX fire

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Tried clearing all history? Or if that doesnt work I suggest you download what finanzas says ;-D
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biyabo

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How many add-ons do you have? Also, limit the MB which Firefox uses in its Preferences. Cutting down on how many bookmarks and add-ons you have greatly increase its startup time. My Firefox used to take over 2 minutes to pop up. I cut my bookmarks to below 100, and my add-ons to below 10, and now it pops up in about 5 seconds.
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thewillweeks

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I have no addons and less than 50 bookmarks and it takes like a minute or two to open. I just can use that! It is TO slow! I have to use I.E.!
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BugMeNot

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The number of fonts you have installed on your system also affects the startup time. More than 50 could be noticable.
Also, there are people working on speeding up the startup time so it will only get better in future.
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thewillweeks

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I havn't installed any fonts.
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BugMeNot

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Will, how many fonts are in the \Windows\Fonts\ folder?
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Heather

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I used to love firefox, the new update has made it slower than a snail, not just the internet, everything. I have minimal addons, I am pulling out my hair and about to give up and find another browser maybe google!

Heather
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BugMeNot

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Which new update? This thread is about the Firefox 3.0.x branch not the 3.5.x branch
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duswdav

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my firefox has become painstakingly slow, it even quits responding for minutes every time i use a certain page and try to run the scripts, my other browsers have become slow as well, but they dont hang up.
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benjaminbuttonsbutthole

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I have the same problem. it takes more then 10 minutes to open. It's frustrated.
only happens when I open another firefox window or if it opens by it self.
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ofarmarine

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Something in Windows doesn't like Firefox. Often I can't get the page to open and a dialog box says it is already running, Rebooting the computer cures this. I have uninstalled, and reinstalled Firefox which helps too.

Some of the new ones are like Windows. Elimanating old problems creates new ones.
Sadly I also found I need the "display in IE" plug-in to get live streaming to work. Can't listen to radio stations unless click on this first.
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lord.poseidon007

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Oh,if your FF wont open cause its oppened in background,just oppen Task Manager and end ''firefox'' proccess :).

And my FF is slow ever since 2nd time I oppened it after I installed new OS :(
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Andrew Killen

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I had this problem until I setup chrome to be the default internet browser and then set firefox up to be the default internet browser.

For some reason that I cannot fathom this was the fix for me. I have/had numerous plugins installed for web developement, disabling all of these did not make a difference to the system, it was only changing the default internet browser and back again that fixed me.
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thewillweeks

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For what it is worth, if you are only worried about speed, IE8 is much faster than 7 was. But still very unsecure... :( That's why I use FF.
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Matt Vnuk

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My FF was taking forever to load, sometimes up to 30 minutes so I just switched back to IE and it's faster than ever. It feels like I was living in the stoneage with FF compared to IE. I loved FF with all the options and cool stuff but my time is worth more than all that...
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andyken

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this is happen to me too.im using 3.6.3 and its getting worse, startup times is reasonable, but when you are browsing or playing online games (not a graphics games, game such as mafia wars on facebook) it is getting so slow..you cant barely click on it. you need to restart whole firefox and re-do it again..
while using chrome is different story..i dont know but i dont want to uninstall firefox as i use FF for a very long times..

oh yeah, my comp specs is intel i7 960, with DDR3 4gb memory and Asus 5850 VGA card and im using W 7.

and yes, im using chrome to posting this question :(

cmon FF, most of your user has been move to chrome, so please make it even lighter. FAST and QUICK is no 1 (for me and most user)
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RMJreno

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same here,,,I am using the latest FF...didnt have the problem until i updated...I even uninstalled and reinstalled and it still isnt working properly...I am disappointed :-(
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rkrause

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Firefox 3 is slow because the Mozilla Foundation developers don't know how to program a Web browser -- or for that matter how to program at all. Firefox is without a doubt the worst Internet application I've ever used in terms of performance and stability. I've been a Web developer for over 15 years. Some of the default settings are outrageous. Seriously, NINETY DAYS to store the history? If you're like me and you visit 30+ sites a day, that can add up to several hundred thousand records in the database. And updating the session-restore JSON file every TEN SECONDS? If you're like me and you have multiple windows and tabs open, that's several megabytes of session data.

On average it takes Firefox over 10 minutes to startup on my computer. And every 20 minutes it freezes up completely while it writes to the hard drive for about 8 minutes non-stop. There was one period yesterday where Firefox took over my computer for 50 minutes writing to my hard drive constantly -- literally the red indicator light didn't even flash off once. I finally had to force it to quit.

It's hard to believe that people actually tout this as a superior browers to IE. Okay maybe IE has its share of problems too, but at least I can actually USE it. Whereas with Firefox I dread even coming into work each day because I know that at least 25% of my time is going to be spent taking a bathroom break while waiting for the Firefox to come back to life again. And that's no joke either. On average about 3 hours daily is spent with Firefox in a "Not Responding" state. That's completely absurd.
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Ryan Doherty

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With that poor performance it's obvious something is terribly wrong with Firefox or your computer. I would recommend creating a new profile and seeing if it fixes it. http://support.mozilla.com/en-US/kb/M...

Also, make sure you have updated to the latest version of Firefox (3.6.3 currently). We've made a lot of performance improvements the past few releases.

Hope that helps!
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Fernanda Saint-Claire

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Wow, what an ignorant web developer - it seems that Firefox is losing me too, so this is not nerdy defense. But,
Wow, how many extremely ignorant people "work", oops, have jobs that they seriously don't deserve, (while people still starve in Africa) . . I am a COMPLETE amateur in informatica BUT:
LIMITING THE AMOUNT THAT WILL BE SAVED IN TERMS OF DAYS OR SIZE IN YOUR CACHE, HISTORY, ETC. IS EXTREMELY SIMPLE TO CHANGE!!!
And what kind of a "working" twat (I hope not getting paid at all) would waste "3 hours" . . . [sorry, the joke is on me - this is what you call a spammer??] . . . 3 hours, instead of downloading a new browser, or even just entering "PRIVATE BROWSING MODE", history/cookie delete or one of many more fixes. What an exaggerated jerk this person is!!
Look you, immediately forgive EVERYone who has even had to be in the same tri-state area, even if they were terrorist bombers (maybe particularly if), because you 'rkrause' seem like one of the most super-extra-over indulged, USELESS whingers on the whole www, (worse still than weal world) - and your negativity must emanate very long and far!
kisses and I hope you get the psyche help you need, and the sewerage-clean job you deserve.
PS. saw that the Tories may win in the UK, BUT your post was THE MOST OF ANYTHING ABSURD I CAN REMEMBER.
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thewillweeks

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Well, I'll tell you that Firefox runs very well on my computer even when saddled down with lots of addons. Maybe you should upgrade your computer?
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rkrause

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This sounds like the most logical solution. IE works fine and so does Chrome. So because Firefox is slow, that means it must be my computer. Sorry I missed that logic, esp. since my computer is never slow except with Firefox. Also, I am hardly the only one that experiences these same issues that plague thousands of other Firefox users on every single platform from Windows, to Linux, to MacOS.
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duswdav

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I actually have no more problems with ff since disabling certain addons, ie and chrome continue to be unreliable on my pc(vista home)
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thewillweeks

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Certain addons (such as BetterPrivacy) can slow down your browser. Try disabling or uninstalling some of them.
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arievandenberg

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I do believe it's related to the latest update. Version 3.6.3 seems to have a noticeable lag when changing focus on form forms. FF has always been faster than IE, but this does detract from it's appeal. Hope they find & fix it in the next minor update!
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BugMeNot

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Firefox 3.6.4 is already out, do Help -> Check for Updates.
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Ryan Doherty

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I would recommend creating a new profile and seeing if it fixes it. Often times old profiles (which store your bookmarks, history, etc) cause problems. http://support.mozilla.com/en-US/kb/M...

Also, make sure you have updated to the latest version of Firefox (3.6.3 currently). We've made a lot of performance improvements the past few releases.

Hope that helps!
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Chakra Earthsong

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Ryan your answer is woefully inadequate. I thought it was my Mac but Firefox is now taking up to 6-7 minutes just to load the home page, on many computers in my city, some on Mac, some on Windows, some with deep profiles and some with relatively new profiles, all on latest version. So that's a poor answer.

Also, you neglected to mention: Should you just create a new profile or must you remove the old profile too; if so, will you lose all your history & book marks? We need a better, more complete answer.
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thewillweeks

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Realize that Ryan isn't a paid employee of Mozilla. He's just trying to help, as a fellow FF enthusiast.
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andyken

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FF need to create a light browser, as you can see, chrome and flocks is getting up, FF is worse than IE in term of loading and heavy browsing when you play some online games.
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thewillweeks

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You might try K Melon, which is based on Firefox, but is insanely fast.