Firefox is running so slow?

When I have a lot of sites open, my browser.. is going slow.. but in another cases, it just a few windows, then my CPUs are working full... there is some kind of app or addon for monitoring process in firefox ... because sometimes this kind of troubles are made by wrong scripts by js or flash..
thks!

Start Firefox in <u>[[Safe Mode]]</u> to check if one of the extensions is causing the problem (switch to the DEFAULT theme: Firefox (Tools) > Add-ons > Appearance/Themes).
*Don't make any changes on the Safe mode start window.
*https://support.mozilla.com/kb/Safe+Mode
*https://support.mozilla.com/kb/Troubleshooting+extensions+and+themes

Similar Messages

My firefox is running very slow, espically when I am typing, scrolling and in many simple activities. On the other hand my internet explorer is going normally like simple browser.

My firefox is running very slow, espically when I am typing, scrolling and in many simple activities. On the other hand my internet explorer is going normally like simple browser.

Hi,
Please try disabling all the features under '''Browsing''' in '''Tools '''('''Alt''' + '''T''') > '''Options '''> '''Advanced '''> '''General'''. You can later toggle the values to find an optimum solution. Please also [https://support.mozilla.org/en-US/kb/Options%20window%20-%20Advanced%20panel?as=u see this.]
Useful links:
[https://support.mozilla.com/en-US/kb/Options%20window All about Tools > Options]
[http://kb.mozillazine.org/About:config Going beyond Tools > Options - about:config]
[http://kb.mozillazine.org/About:config_entries about:config Entries]
[https://support.mozilla.com/en-US/kb/Page%20Info%20window Page Info] Tools (Alt + T) > Page Info, Right-click > View Page Info
[https://support.mozilla.com/en-US/kb/Keyboard%20shortcuts Keyboard Shortcuts]
[https://support.mozilla.com/en-US/kb/Viewing%20video%20in%20Firefox%20without%20a%20plugin Viewing Video without Plugins]
[http://kb.mozillazine.org/Profile_folder_-_Firefox Firefox Profile Folder & Files]
[https://developer.mozilla.org/en/Command_Line_Options#Browser Firefox Commands]
[https://support.mozilla.com/en-US/kb/Basic%20Troubleshooting Basic Troubleshooting]
[https://support.mozilla.com/en-US/kb/common-questions-after-upgrading-firefox-36 After Upgrading]
[https://support.mozilla.com/en-US/kb/Safe%20Mode Safe Mode]
[http://kb.mozillazine.org/Problematic_extensions Problematic Extensions]
[https://support.mozilla.com/en-US/kb/Troubleshooting%20extensions%20and%20themes Troubleshooting Extensions and Themes]
[https://support.mozilla.com/en-US/kb/Troubleshooting%20plugins Troubleshooting Plugins]
[http://kb.mozillazine.org/Testing_plugins Testing Plugins]

Help - Firefox is running real slow, loading pages, etc compared to i.e/safari

hey guys appreciate the help.. firefox is running real slow lately.. like loading pages takes a good 2 minutes compared to i.e or safari loading in under 2 seconds
i dont have many addons, just an extended status bar and thats pretty much it
what can i do other then just reinstalling ??

'''[https://support.mozilla.org/en-US/kb/troubleshoot-firefox-issues-using-safe-mode Start Firefox in Safe Mode]''' {web link}
While you are in safe mode;
Type '''about:preferences'''<Enter> in the address bar
Select '''Advanced > General.'''
Look for and turn off '''Use Hardware Acceleration'''.
Poke around safe web sites. Are there any problems?
Then restart.

My firefox is running very slow and crashes and the curcular thing at the top keeps spinning

Hi,
Recently my firefox has been running very slow. Its take long to browse all websites and sometimes it takes really long when the circular thing at the top left hand corner keeps spinning.
When that happens; if I click on the page the screen goes white and then says that firefox is not responding so I close it however if I just leave it at the white screen firefox comes back to normal.
Also I noticed when I am using firefox my connection has gone really slow. I have disabled most plug ins im not using and also uninstalled some programs I was not using anymore on my Dell Inspiron 530S. I also have AVG Free Edition and have done a full virus scan. I think I might have spyware or malware on my computer so today I purchased Adaware Pro and am now running a full system scan so hopefully that solves the problem as I have been told that spyware can slow down a computer.
Your help in this matter would be really appreciated.
Thank you
Yusuf

An easy try would be to clear the cache, sometimes a bad page will be loaded there and each time you go back to the page it uses the cached page. [[How to clear the cache]] Another issue is Anti-virus software doing constant sweeps of the pages you are trying to view.

Firefox is running so slow even after clearing history, cookies, and cache

My firefox browser suddenly started running very slow. I have cleared history, cookies, and cache. I have run scans, and even tried to uninstall and reinstall. it is still running slow

flytnn,
after a fresh install, Spotlight will need to reïndex the files on your internal disk — that happens each time a fresh installation takes place.
I see that you have OS X 10.9.2 installed. Are you planning on installing the 10.9.3 update?
Your installed version of Java is outdated — the most recent version can be downloaded from here.

Firefox 22 running very slow on windows 7 but no problem in linux. Help

Firefox 22 is running very slow ( rather stalling forever) on windows 7.
I tried resetting option from the "Troubleshooting information" menu and also tried disabling "Hardware acceleration" but still having the problem.
Takes almost a minute ( "New window not responding"..) just to try any option..like opening a new tab.
I have same version on linux mint and but FF runs smoothly.

Sorry, not an option. As I said, I have binned FF22 and gone back to 21 -- and it works just as fast as it always did, corrupt profile or no corrupt profile.

Firefox loads pages much slower than Chrome

Recently switched back to using Firefox as I wasn't finding the extensions I like for Chrome only to discover that Firefox is running significantly slower by comparison. Tried uninstalling/reinstalling and it hasn't helped.

A possible cause is security software (firewall,anti-virus) that blocks or restricts Firefox or the plugin-container process without informing you, possibly after detecting changes (update) to the Firefox program.
Remove all rules for Firefox and the plugin-container from the permissions list in the firewall and let your firewall ask again for permission to get full unrestricted access to internet for Firefox and the plugin-container process and the updater process.
See:
*https://support.mozilla.org/kb/Server+not+found
*https://support.mozilla.org/kb/Firewalls
Create a new profile as a test to check if your current profile is causing the problems.
See "Creating a profile":
*https://support.mozilla.org/kb/profile-manager-create-and-remove-firefox-profiles
*http://kb.mozillazine.org/Standard_diagnostic_-_Firefox#Profile_issues
There may be extensions and plugins installed by default in a new profile, so check that in "Tools > Add-ons > Extensions & Plugins" in case there are still problems.
If the new profile works then you can transfer some files from the old profile to that new profile, but be careful not to copy corrupted files.
*http://kb.mozillazine.org/Transferring_data_to_a_new_profile_-_Firefox

IMac running very slow; how can I fix it?

My iMac is running so slow, I can hardly use it all. All kinds of spinning balls, etc. I don't even know where to look to diagnose. If I restart, it will be faster for awhile. Both Safari and Firefox are running very slow...or not at all. I have repaired permissions and hard drive. I have dumped permissions for Safari and Finder and anything else that seemed involved. I checked my memory....this is the report I got. Does the fact that the first one say "disabled" mean anything? I will appreciate help you can give me.
Memory Slots:
ECC:          Disabled
BANK 0/DIMM0:
Size:          1 GB
Type:          DDR2 SDRAM
Speed:          667 MHz
Status:          OK
Manufacturer:          0xCE00000000000000
Part Number:          0x4D342037305432393533455A332D43453620
Serial Number:          0x772E336D
BANK 1/DIMM1:
Size:          1 GB
Type:          DDR2 SDRAM
Speed:          667 MHz
Status:          OK
Manufacturer:          0x2C00000000000000
Part Number:          0x3848544631323836344844592D3636374531
Serial Number:          0xE00CB01C

Questions and Answers:
How full is your Mac's hard drive? * Capacity: 248.92 GB.   * Available:175.18. *Used 73.75GB on disk.
How many applications do you run simultaneously in the background while working in another application?    *Not many. I try to remember to quit open apps especially when the computer runs slowly. I always have open Calendar, Mail, Safari.
Do you run any antivirus software on your Mac? Antivirus software can slow down the normal operation of OS X.    *I have an anti virus but I do not let it run. I turn in on to check files and email now and then.
Do you run any "crapware" like Mackeeper or any other type of so called hard drive "cleaning" apps? *No, I have none.
One thing I notice is that when I turn it off at night, it runs very well the next day until I've been on it for a few hours then it gets really bad. Last night, it wouldn't work at all so I gave up and turned it off. This afternoon I turned it back on and it has been working very well ever since.
Thanks for looking at this. I have never checked my hard drive before so I didn't know how much it had on it, but it doesn't seem like it is too full.

Firefox runs extremely slow on my Macbook Pro after upgrade to 5.0.1. It is unbearable.

I upgraded to 5.0.1, then to 6.0, and Firefox still runs slow. Gets stuck for a minute when I open new windows and type a Google search. The version I had before 3.6.x handled my rapid-fire new window searches no problem, but now I find myself waiting while Firefox locks up my whole computer for a minute or so.
I uninstalled 6.0 and reinstalled 3.6.21, but it is still very laggy.
Please give me a suggestion on how to fix this, I've tried using other browsers and don't like them. I'm in my last year of nursing school and don't want to have to learn another browser!!

That are 2 very good leads, but unfortunately I already tested that: I uninstalled all fonts, so there are only system fonts left - no improvement. I also started the admin account without any start elements (pressing "shift" during boot) - no improvement. The processes (all of them) except Illustrator are all at 0%, some can reach 0,7% - only Illustrator itself is at 100,4% for these few seconds. There is no difference between the admin account and the second user account regarding the Activity Monitor.
But the solution must be somewhere in the difeerence between the two accounts - user preferences, application support files, ???

Since up dating my Firefox I can not play any games on Facebook they all run very slow, can someone please help me with a solution.

Since up dating my Firefox I can not play any games on Facebook they all run very slow, can someone please help me with a solution.It mainly seems to be with games.

RE: "P.S. I found it aggravating that I couldn't copy and paste text here, it wanted me to insert as a link or an image, how do you insert plain text?"
I take it you tried using the "right click" menu? That doesn't seem to work, as you noted, but, you should be able to paste text by pressing your CTRL key and while holding it down, press the "V" letter key.
CTRL + C = COPY
CTRL + X = CUT
CTRL + V = PASTE
HTH,
Ortho_Fan

Firefox 3.6.12 is running extremely slow and taking 100% CPU on my mac.

Just updated Firefox to 3.6.12 and it's taking over 100% CPU on one of my processors and is running EXTREMELY slow, too slow to use.

Firefox used to be the doggs bollocks now its just a dog.
Back to internet exploder fro me im afraid.I cant keep waiting twenty seconds for everything its like being back in 1993.

Firefox is running slow. Problem goes away in Safemode, reset did not work.

I keep getting Firefox is running slow message. Starting in Safemode seems to help. How do I determine what is causing the slow down.

Try to disable hardware acceleration in Firefox.
*Tools > Options > Advanced > General > Browsing: "Use hardware acceleration when available"
*https://support.mozilla.org/kb/Troubleshooting+extensions+and+themes

Mozilla Firefox run very slow on a Apple Mac OS X

Someone feedback to me that running Mozilla Firefox on a Apple Mac OS X runs very slow.
I suggesting Mozilla to fix this issues.

Hey, am using firefox on my mac air 13.3 (yosemite), and i must say that there is no problem so far. tell that "someone" to clean cache and cookies, or may be a reinstall could fix it.

Firefox will not let use any checkboxes on any sites, like when you read the rules and want to check the acceot checkbox. We just started using firefox alot because IE is running incredibly slow on our computer. Any ideas

Our computer has been running terribly slow, so we switched to using Firefox and it will not let me use any checkboxes on any website. Is there a setting or anything that needs to be changed

Many of your points are totally legitimate.
This one, however, is not:
…To put it another way, the design of the site seems to be geared much more towards its regular users than those the site is supposedly trying to "help"…
The design and management of the forums for more than five years have driven literally dozens of the most valuable contributors and "regulars" away from the forums—permanently.
The only conclusion a prudent, reasonable person can draw from this state of affairs is that Adobe consciously and deliberately want to kill these forums by attrition—without a the PR hit they would otherwise take if they suddenly just shut them down.

I am getting a message on my computer that says Firefox is using a large amount of the CPU on the computer. Now when I use firefox and thunderbird it is running extremely slow. Please help

I am getting a message on the bottom of my computer task bar that says Firefox is using a large amount of the CPU. I noticed that my computer is running extremely slow and in thunderbird it takes a long time to print attachments.
I have another computer and I did not load the upgrade. That computer is working fine. Please help

I too have noticed that once i restored from iCloud. Pictures blurry and videos wont play!
Need help too!!

Firefox is running so slow?

Similar Messages

Maybe you are looking for