Why does firefox run so slow?

it takes so long to load pages and sometimes it just freezes

I have been experiencing long "connecting" times recently with FF4 and Win7. This morning was really bad. I tried resetting my router and modem.... much better. I don't think I have a hardware problem, but this seemed to help immensely.

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Why does Firefox run supper slow? Can u fix it to dun faster on webstie

Why is Firefox run supper slow again again again it sucks it runs good for a few minutes on yahoo.com and on Facebook.com and on tag.com. every time i get on these websites they run supper super slow its getting old. Could you please fix to run faster ty

Firefox running supper slow on these websites. on www.yahoo www.Facebook www.tag. It sucks please fix ty they were running great for a while and now back at the same running slow again.

Why does Firefox run supper slow? Can u fix it to run faster on webstie

every time i get on a website it never loads right running to slow it takes for every on the websites. on www.yahoo.com @ www.Face book.com @ www.tagged.com I have trouble with fire fox all the time on these website they run to freaking slow it sucks please can you fix to run faster it was before working right please fix ty

Firefox running supper slow on these websites. on www.yahoo www.Facebook www.tag. It sucks please fix ty they were running great for a while and now back at the same running slow again.

Why is firefox running so slow

why is firefox running so slowly?

Can be Add-ons. Start up Fx in Safe Mode to test by holding down the Option key. This will run without any Add-ons. If it's OK like that, disable them all and then add them back one at a time to see which one is responsible.

Have a iPhone 4s but IOS8 but why does it run so slow?

Updated to the ios8 platform. took out a few songs for the download. but everything is running so slow. i don't have a lot of apps. and not a lot of the apps are running. is this a issue or just do i need to upgrade?

What are you doing in Aperture? Have you imported a large iPhoto library? Then Aperture probably is still doing massive setup work in the background - indexing the content, building previews, scanning for faces and places. This may take several hours or several days, depending on the size of your library.
But your hardware is not optimal for Aperture. If your machine is not maxed out with 2 GB RAM, try to upgrade this. You will have much more joy with more RAM. Also check, if you are running out of disk space. The operating system will need at least 10GB of free disk space asworking space to run smoothly, but more free space is advisable. An overfull disk will slow the system down considerably - try to keep at least 20% of the system drive free - or more, as our hardware experts will tell you.
You can check for bottlenecks by launching the Activity Monitor from the Applications > Utility folder. This will tell you, which processes are using most of the CPU time, the memory usage, the disk writes.
In addition to this, Aperture has its own Activity viewer. You can lauch it from the "Windows" menu. here you can see the active Aperture activities and the progress they are making.
Regrads
Léonie

Why does aperture run so slow

i have loaded a very larg number of photos into aperture. now the app runs so slow it is impossible to use. what am i doing wrong?

what am i doing wrong?
Probably nothing.
You might turn on the "Activity" window in Aperture, to see what Aperture is doing (from Aperture's main menu bar: "Window > Show Activity". After importing it will need plenty of time to render previews, detect faces, assign places, etc. Best let it run over night.
Other things that might be a problem:
Aperture will slow down, if the project are too large. Did you import all images into one single project? Keep the projects small, not much larger than about 200 images per project.
And if your harddisk becomes full, you may slow down the mac considerably.Try to keep at least 20 GB of your harddisk free.
You may have imported a corrupted image or an incompatible video. If that is the case, than Aperture will try over and over again to render a preview and not succeed. It might help, to disable the rendering of previews, until you have spotted the video or image that is causing the problem
How much RAM do you have, and how full is your disk?
Regards
Léonie

Why does Firefox run slower on Wondows 7 64bit?

Ok so I just totally rebuilt my system but instead of reinstalling Windows 7 32bit I decided I wanted to run a 64bit version instead. But when I ran 32bit Firefox was my fastest browser and now that I have a 64bit its in 2nd place to IE9 beta. So was just wondering really if there was a 64bit edition of Firefox that I'm not able to find.

Have you tuned your windows system and gotten rid of indexing and excess processes. See this tuning guide

Why does Firefox run auto on startup?

I want a browser which can be screend only when I choose to use it. When it runs on startup, it is almost full screen, and gets in the road of email work etc.

Boot the computer in Windows Safe Mode with network support (press F8 on the boot screen) as a test.
*http://www.bleepingcomputer.com/tutorials/how-to-start-windows-in-safe-mode/
You can use the MSConfig program or the Autoruns utility to see which software and services are getting started (be cautious with disabling services).
*http://technet.microsoft.com/en-us/sysinternals/bb963902.aspx
It is possible that a program tries to open the default browser, so you can try to set another browser as the default browser to see if that has effect.
Do a malware check with several malware scanning programs on the Windows computer.
Please scan with all programs because each program detects different malware.
All these programs have free versions.
Make sure that you update each program to get the latest version of their databases before doing a scan.
*Malwarebytes' Anti-Malware: http://www.malwarebytes.org/mbam.php
*AdwCleaner: http://www.bleepingcomputer.com/download/adwcleaner/ http://www.softpedia.com/get/Antivirus/Removal-Tools/AdwCleaner.shtml
*SuperAntispyware: http://www.superantispyware.com/
*Microsoft Safety Scanner: http://www.microsoft.com/security/scanner/en-us/default.aspx
*Windows Defender: http://windows.microsoft.com/en-us/windows/using-defender
*Spybot Search & Destroy: http://www.safer-networking.org/en/index.html
*Kasperky Free Security Scan: http://www.kaspersky.com/security-scan
You can also do a check for a rootkit infection with TDSSKiller.
*Anti-rootkit utility TDSSKiller: http://support.kaspersky.com/5350?el=88446
See also:
*"Spyware on Windows": http://kb.mozillazine.org/Popups_not_blocked
*https://support.mozilla.org/kb/troubleshoot-firefox-issues-caused-malware

Why is Firefox running super slow and IE runs great? New details 03/29

Fire Fox was running great, and then for some reason, it starting runnning extremely slow. When I type it is slow to appear on the screen, ads from websites are jerky, and even the circle spins slowly for every web load/refresh. I went as far as uninstalling Fire Fox to include favorites and associated data, re-downloading and installing. This did not help either. I had to use IE to even ask for help, its that bad. AVG Virus scan and AVG PC tune up fixed problems and several reboots did not help. Did not crash. Please help, I dont like IE.

I had same problem. At least in my case it's due to Nvidia Graphics Card using 3D rendering feature.
When I played videos on YouTube Firefox was loading these DLL:
C:\Program Files (x86)\NVIDIA Corporation\3D Vision\Nv3DVStreaming.dll
C:\Program Files (x86)\NVIDIA Corporation\3D Vision\nvSCPAPI.dll
C:\Program Files (x86)\NVIDIA Corporation\3D Vision\nvStereoApiI.dll
Disabling Nvidia 3D crap fixes the problem for me!!
Prezla

I am running a VI with 8 Booleans that serve as selections. Why does it run so slow?

Do the boolean indicators slow down LAbVIEW?

You don't give enough information.
Post an example, or at least explain what you mean by "serve as selections".
Boolean indicators are quite fast - they don't occupy ANY time unless they actually change state.
Steve Bird
Culverson Software - Elegant software that is a pleasure to use.
Culverson.com
Blog for (mostly LabVIEW) programmers: Tips And Tricks

Why does Firefox 8.0 open so SLOW?

I just updated to Firefox 8.0. I had the same problem before updating from 7.0. It takes over 1 minute for firefox to open on my home computer which runs Windows 7. However, my office computer runs XP and opens Firefox 7.0 in less than 10 seconds. Home computer opened fast when firefox was first installed when purchased new 6 mo ago. Firefox was originally installed on both computer at approx. same time. Why does it open so SLOW? I've search several websites for solution, but most posts were several years old. I'm ready to go back to Internet Explorer. 60 seconds is a long time to hold your breathe.

Hope this helps a bit
https://support.mozilla.com/en-US/kb/firefox-takes-long-time-start-up?s=slow&r=1&as=s#os=mac&browser=fx8

Why does Firefox give this message when I do not have another program running "Firefox is already running, but is not responding. To open a new window, you must first close the existing Firefox process, or restart your system."

Question
why does Firefox give this message when I do not have another program running or another window open - "Firefox is already running, but is not responding. To open a new window, you must first close the existing Firefox process, or restart your system." edit

See also "Hang at exit":
*http://kb.mozillazine.org/Firefox_hangs
*https://support.mozilla.com/kb/Firefox+hangs

Why does firefox time out so often? slows down my working

Why does firefox time out so often. I can be in the middle of something and it just stops. did it as I am trying to write this note. very frustrating! It either times out or freezes. the former happens more often. I can be on the web or on yahoo mail.

The default of the pref network.http.max-connections has been increased from 30 to 256 in Firefox 6+ versions.
Try to decrease the value of the pref network.http.max-connections from 255 to a setting like 30 as used in Firefox 3 versions.
*https://support.mozilla.com/kb/Firefox+never+finishes+loading+certain+websites
See also:
* http://blog.bonardo.net/2011/09/30/is-your-firefor-freezing-at-regular-intervals
* Places Maintenance: https://addons.mozilla.org/firefox/addon/places-maintenance/

Why does Firefox have to make it so difficult to get answers--I am not going to be able to check the website to see what anyone might reply to my question on crashing?

I have no way of checking to see if anyone answers this. Why does Firefox have to make it so difficult?
What does this means: DLL C:\Program Files\Mozilla Firefox\MOZCRT19.dll is not a valid Windows image. Please check this against your installation diskette.
Suddenly all my tabs closed. Then Windows told me I had a gazillion infections. Then a tiny strip appeared saying it was Firefox and these little blocks started to fill up the little strip as if it were downloading something--there was no way to cancel this so I cut the power. Now when I try to use the Firefox icon, I get the message above.
Am I supposed to remove the old Firefox stuff and start from scratch? I am stuck using Internet Explorer.
I went to the Firefox website and tried to download it again, but McAffee jumped in and said there is something wrong with Firefox and I should register with them that I am downloading Firefox (I do not have McAffee). Then I got a security warning saying Firefox is not safe.
I am completely at a loss as to what to do next, since I don't understand any of this mumbojumbo.

Here's the story on one of your infections, namely JS:Redirector-EH[Trj]: http://www.microsoft.com/security/portal/Threat/Encyclopedia/Entry.aspx?Name=Trojan%3aJS%2fRedirector.H
The main problem with malware is that it uses the installation to proliferate by contacting hostile servers to download more of the same rogue code.
Firefox doesn't have the option to "Run" a file. You can only "Save File" or "Cancel". If you downloaded it with IE8, then yes, you can run it, but that's not what I wanted you to do.
What you should do now is to disable System Restore. You can open System Properties by hitting the Windows logo key and Pause/Break key together. Then click the "System Restore" tab. Then checkmark the box which says "''Turn off System Restore on all drives''". Reboot to clear its contents. System Restore unfortunately makes a backup of all executables which includes viruses so that when you reboot without deleting them first, System Restore reinstates them again.
After you complete that step, run Avast and Malwarebytes again to make sure the system is clean.
Then go to the Windows Update site (link on your start menu) and install the missing patches which enabled your machine to become infected in the first place.
Once the system is clean, repeat step one to download Firefox again, but please do not run the file. If you don't see the option to "Save File", cancel the download, but it should be there. You can use this direct download link to download FF4.0.1 [http://www.mozilla.com/products/download.html?product=firefox-4.0.1&os=win&lang=en-US Download Firefox 4.0.1]
Run the file after you download it to the desktop.

Why does firefox hang when opening and takes several minutes to come up?

Why does Firefox hang for several minutes before coming up?

I am also having this problem. When trying to reboot, I get an endless cycle of the BIOS screen, then "MACHINE ERROR", then back. Running the same dmesg command as snoxu results in a similar error message. I am forced to shutdown by holding the power button. Upon rebooting, I get an error message that all extensions have been turned off (using Gnome Shell). Then I have to logout and login.
Shutting down and then restarting works fine.
Additional info:
System76 Gazelle Professional laptop
syslinux, systemd, GDM, Gnome Shell

Why does firefox run so slow?

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