« Damn You, Macintosh | Main | Easter Gets A Bad Rap »

Strange Firefox Problem

Does anyone know if there's a memory leak in Firefox? Several times this week, I've been browsing a website that has some kind of animated advertisement, and found that all of a sudden Firefox's CPU usage jumps to about 85%. This then makes my computer's fans kick on in a very loud and annoying manner.

Notably, it doesn't happen under Internet Explorer. However, I can't figure out why this is happening. Any thoughts?


TrackBack URL for this entry:


I have seen the same problem, but I don't know the cause either. I have speculated at flaws with Firefox's Flash integration. It appears that the problem may be javascript: https://bugzilla.mozilla.org/show_bug.cgi?id=264438
See, this is one reason why I love blogging. I don't have time to figure this out today, but need a solution. And someone like Richard comes along and just points the way for me. Thanks, Richard! Hopefully I'll have time to look at this later.
Fascinating. I've had the same problem. After a few hours using Firefox my computer has slowed to a crawl and I want to drop it out the window and kick my dog to boot. With my boot, sorry. Actually, I don't have a dog, so that's just a figure of speech. Anyway, misery loves company, so I'm glad (in a perverse sort of way) that you're suffering too. :) Let's hope it doesn't last.
I noticed the problem too (with the fan), but I never would have made the connection to Firefox. I thought my 8 month old laptop was already dying.
This is further proof that the internet is magic. Yesterday while I had multiple Firefox windows open my laptop fan kicked in in a way that I'd only heard when my last desktop was about to die on me. This morning, the answer's here! Spooky.
Make sure your firefox browser is up to date. You should have version 1.02. If you see a a red circle in the corner of the browser, just click on it and it will update to the latest version. Do you have any extensions on your browser? Those might be the problem.
I have the lastest update for firefox and still, it suck up all the cpu!
I have 1.0.3. I've seen this problem since 1.0. I have lots of browser windows open & when my machine starts being sluggish I check CPU & Firefox is ranging between 95-99%. I start closing browser windows down & as each one closes there is a momentary drop to the 70s or 80s but within seconds it's back up at 98-99. I cannot attribute it to any particular web page or type of functionality. It doesn't stop pegging the CPU till the last window is closed. I think there is some deep-seated bug causing this... -yosh
I too have this problem with firefox. I have noticted that it seems to be triggered, by at least, those pages which have transparent layers on them, like you often see with those advertizing overlays. For instance this page will always send my firefox into a 70% cpu consumption and remain that high until I kill firefox. www.channel4.com I am using 1.0 and will upgrade to the latest and see if the problem goes away.
I'm having this problem too. It's just started in the last few days. I'm running Firefox 1.0.4 on Windows 2000. The only plugin I'm using is the Yahoo plugin. I think I might remove that to be sure it's the browser. It's getting to the point where my machine locks up for 5 minutes at a time. I can't tolerate it for much longer! The only things that have changed recently that I can identify is that I'm running Oracle JDeveloper 10g, and Apache2 with PHP5 mod installed. When I run all 3 together, Firefox seems to hog my CPU and everything grinds to a halt for minutes at a time. Grrrr. Alison
Update to the latest version of Java from Sun's site. I had this problem a while ago, and some combination of un/reinstalling Java via both Sun's site and via the Mozilla Java plugin installer worked. I'd suggest uninstalling all javas and reinstalling the new one fresh.
I have the same problem with I was browsing http://www.traders.com/ and got a very high cpu usage. If I browse this site with Internet Explorer the cpu usage is 0%.
I have had the same problem, although I see this is an older post, I hope some of the things mentioned will help- I just installed that flashblock extention, to blok ads and such, so we will see. thanks for the resource.

Post a comment

NOTICE TO SPAMMERS, COMMENT ROBOTS, TRACKBACK SPAMMERS AND OTHER NON-HUMAN VISITORS: No comment or trackback left via a robot is ever welcome at Three Years of Hell. Your interference imposes significant costs upon me and my legitimate users. The owner, user or affiliate who advertises using non-human visitors and leaves a comment or trackback on this site therefore agrees to the following: (a) they will pay fifty cents (US$0.50) to Anthony Rickey (hereinafter, the "Host") for every spam trackback or comment processed through any blogs hosted on threeyearsofhell.com, morgrave.com or housevirgo.com, irrespective of whether that comment or trackback is actually posted on the publicly-accessible site, such fees to cover Host's costs of hosting and bandwidth, time in tending to your comment or trackback and costs of enforcement; (b) if such comment or trackback is published on the publicly-accessible site, an additional fee of one dollar (US$1.00) per day per URL included in the comment or trackback for every day the comment or trackback remains publicly available, such fee to represent the value of publicity and search-engine placement advantages.

Giving The Devil His Due

Choose Stylesheet

What I'm Reading

D.C. Noir

My city. But darker.
A Clockwork Orange

About time I read this...


Projects I've Been Involved With

A Round-the-World Travel Blog: Devil May Care (A new round-the-world travel blog, co-written with my wife)
Parents for Inclusive Education (From my Clinic)

Syndicated from other sites

The Columbia Continuum
Other Blogs by CLS students

De Novo
Theory and Practice
Liberal Federalism?
Good News, No Foolin'

Nancy Pelosi covers her head and visits the head of John the Baptist.
Vlogging in from Austin.
Omikase/"American Idol"

Jeremy Blachman's Weblog: 2007
Happy Passover
Looking for Advice re: LA
Google Books

Stay of Execution
What I've Learned From This Blog, or My Yellow Underpants
The End
Mid Thirties

Legal Theory Blog
Program Announcement: Summer Programs on the Constitution at George Washington
Book Announement: Political Foundations of Judicial Supremacy by Whittington
Entry Level Hiring Report

The Volokh Conspiracy
Making the Daily Show:
Civil unions pass New Hampshire House:
Profile of Yale Law Dean Harold Koh:

Crescat Sententia
Hillary II
Politics and Principal/Agents

Law Dork
Election Approaches
Following Lewis
New Jersey High Court: 'Same Rights and Benefits'

Surveying the revival
Birds of paradise

Half the Sins of Mankind
Cheney Has Spoken Religious conservatives who may ...
Does Ahmadinejad Know Christianity Better Than MSN...
Borders as Genocide In discussions of climate chan...

For lovers of garden gnomes...and any China-freaks out there
We Interrupt Your Regularly Scheduled Programming

Does SOX explain the flight from NY?
More Litvak on SOX effect on cross-listed firms
What did the market learn from internal controls reporting?

The Yin Blog
Iowa City = Riyadh
Jeffrey Rosen's "The Supreme Court"
Geek alert -- who would win between Battlestar Galactica and the U.S.S. Enterprise?

Letters of Marque
And there we are

Signing Off

Dark Bilious Vapors
Jim (The Waco Kid): Where you headed, cowboy?
Bart: Nowhere special.
Jim: Nowhere special. I always wanted to go there.
Bart: Come on.
--"Blazing Saddles"

Technical Difficulties... please stand by....
The Onion should have gotten a patent first....

Legal Ethics Forum
Interesting new Expert DQ case
Decency, Due Care, and The Yoo-Delahunty Memorandum
Thinking About the Fired U.S. Attorneys

Ex Post
Student Symposium- Chicago!
More Hmong - Now at Law School
Good Samaritan Laws: Good For America?

Appellate Law & Practice
Those turned over documents
CA1: courts can’t help people acquitted of crimes purge the taint of acquitted conduct
CA1: restrictions on chain liquor stores in Rhode Island are STILL okay

the imbroglio
High schoolers turn in plagiarism screeners for copyright infringement
Paris to offer 20,600 bikes at 1,450 stations to rent by the end of the year

The Republic of T.
The Secret of the Snack Attack
links for 2007-04-04
Where You Link is What You Get

Distractions for stressed law students

The Other Side: Twisted AnimationsSomething Positive, a truly good webcomic

Syndicate This Site



Stop Spam Harvesters, Join Project Honey Pot