Firefox Consumes the CPU - Comments Page 1

The problem is most likely caused by firefox being paired with a newer version of acrobat reader. If firefox is trying to load the acrobat plugin and: 1) You do not have FF 1.0.x or higher AND 2) You are using the latest version of Acrobat, you can have this problem.

There are 3 solutions available: Upgrade your firefox install, Downgrade your acrobat install to 5.0, or Download Adobe Reader Speedup from here: http://tinyurl.com/4fzy6

Solution 3 kills the plugin loading and seems to work in most instances. I have had 1 instance where this was ineffective. System restore was the culprit but that is beyond the scope of this answer.

I'll go one better; something I've recommended to my friends. Throw any and all versions of acrobat reader off your machine, uninstall it; replace it with a better, faster, far less memory-hogging app.
Foxit PDF Reader. See here: http://www.foxitsoftware.com/pdf/rd_intro.php

BTW, I'm still using firebird 0.7 and love it. True, there are a few sites that don't render correctly, which is when I use the fine extension 'Open this page in IE'.

EDITOR'S NOTE: There are some serious security flaws in back-level Firefox versions. I would strongly recommend that you upgrade to the latest version.

I don't think it's solely a problem with Adobe. I have had it happen while on my Yahoo! mail trying to attach a file. If I try to browse to the file and change directories too quickly (while the last bits of the "attach files" page are still loading), CPU usage shoots to 100% and stays there until I Ctrl-Alt-Delete and kill FireFox. No Adobe anything in play. If I am careful to let the page finish loading before I click the browse button, it's just fine. The problem is repeatable. If that page is still loading when I click Browse and try to change directories, it maxes the CPU every time.

I followed these directions, and guess what? IT WORKS. I think it is probably the Windows Memory hack near the end of the story.

http://www.extremetech.com/article2/0,1697,1854234,00.asp

I have similar annoying issues with Firefox too. (I love firefox, except for this). Ocassionally, I've left my computer running with Firefox up and running. I come back to the computer, and the computer is churning away like it's tracking down the value of pi... I looked at CPU usage (looking at "processes" in Windows Task manager), and Firefox was taking up an ENORMOUS amount, even it wasn't "doing" anything. I closed Firefox, but even after it had closed, it continued to eat up a large amoung of CPU capacity, although after about 15 minutes it gradually went down to an acceptable level. What gives?!

The exact reason for the 100% memory usage may remain a mystery. However, several things can be considered, including the aforementioned fixes.

First, try uninstalling any extensions you may have and then take notice of your system. A faulty, unstable extension may be causing the problem.

Secondly, depending on the websites you are visiting (i.e. mature and/or inappropriate), they may have a lot of embedded code that attempts to install browser hijacks,trojans,viruses,etc. Firefox will freeze as it is processing and actively declining the requests. Also, a lot of embedded flash objects will also cause firefox to use a lot of cpu time. Try installing the firefox flash stopper extension.

Thirdly, if you use firefox's built in download manager, DON'T. Downloading one or two files at a time is usually fine. You may run into an issue if you download 5+ large files at a time. Firefox will surrender all resources to the download manager and leave your system starving.

There are several other issues with firefox as well, memory management issues and more. I still use it, you just have to minimize the possiblities as to what may be going wrong.

I don't recall ever seeing this except for times when Firefox crashes, or perhaps even some other process. Sometimes you will find in the running processes tab in Task Manager, an image name of dumprep.exe. When I see my system slowed down, that's what I look for, and ending the process makes it all good. Perhaps I missed the point of this post, but then again, maybe there are some that haven't noticed this. Google dumprep.exe and you can find ways to disable the dump reporting that is going on, or just end the process.

We are experiencing the same problem but it has nothing to do with acrobat or plug-ins. Seems to be purely based on page size and heavy javascript usage. I have page with is used to display a deep (sometimes very deep) tree view of query results. Client-side javascript is used to recursively open/close folders. Trying to open all nodes on a large tree view sends firefox into the weeds. 99% CPU usage. I have the same problem in FF 1.5 and 2.0. I've gotta say this kind of thing sends me running back to IE. :(

@John Yanefski, Do you know if there's any fix for that? it's so hard to browse the web these days with FF crashing on me every 5 or 10 minutes :(

Installing the flash blocker should resolve the mem problem. 'And people wonder why I'm sticking with Internet Explorer'. Yes go stick with the bug riden, security challange choice. That bloatware didn't change for years until people actually started to use something else. Let's see if this makes it on the site the same way I wrote it.

EDITOR'S NOTE: You post as "tom sawyer" with an email address of "unlisted@nothing.com", tell people to solve a browser problem by turning off an important feature that will render many sites useless, and expect credibility?