Firefox exe continues to run after closing all windows, and consumes massive amounts of cpu

after closing all firefox windows and trying to reopen i get the "firefox is still running but unresponsive" message, and have to go into task manager, processes and end the firefox exe, which is consuming between 96 and 100 cpu.

Norton IPS is apparently a known issue being mentioned in the KB articles:
*[[firefox will not start]]
* [[firefox crashes when you open it]]
* I also found an earlier post on the Norton site http://community.norton.com/t5/Norton-Internet-Security-Norton/Norton-IPS-1-0-Addon-for-FireFox/m-p/25425#M8494 but I am not sure this is still considered a problem.
What exactly is this IPS extension. I am currently using XPs with Norton's NIS (version 18.6 - it is a paid for subscription). I do have Intrusion Prevention active in NIS but I see no specific extension or program IPS. Is this some optional additional software?
I did find an explanation but from 2009
* http://community.norton.com/t5/Norton-Protection-Blog/Intrusion-Prevention-System-IPS-Your-first-line-of-defense/ba-p/124400
I am NOT using the Norton Toolbar etc. is it these components that are causing the problem i.e safe search etc.
I am not having problems with firefox hanging or continuing, despite using NIS.
There is a bug on this https://bugzilla.mozilla.org/show_bug.cgi?id=548945 but that does not seem to have got very far in confirming or resolving the issue. I imagine Norton have a very large userbase and it seems unlikely that the basic NIS is itself incompatible with Firefox.

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Firefox apears in firewall even after closing all processes and continues to download file

firefox continues to download files even after closing all the processes, this behavior was noticed by looking at the my firewall activity log. I am using get them all download manger (firefox extension) to download files in firefox. When first time firefox is started after starting computer it doesnt have any problem, but once I open the download manager and start downloading files it never stops.
I am using : down them all version 2.05 beta on FF 3.6.12
1. start computer
2. open firefox
3. check firewall status (bitdefender firewall running at report level) - no activity noticed
3. add url to download file in download them all manager
4. start download - bitdefinder shows firefox accessing internet
5. pause download
6. check firewall status - bitdefinder doesn't show firefox accessing internet in process listing but it does show network activity is going on at its peak.
7. close all firefox windows and remove firefox.exe from task manager
8. check bit defiender firewall status it continues to run at peak eating up all the network bandwidth
9. remove rule of firefox from firewall so as it may prompt when firefox try to connect to internet (bit definder firewall is running in report mode for approval for each connection)
10. as soon as rule removed, bit definder pops up window sayaing firefox is trying to access remote server (same from where the download was earlier started)
11. Allow the firefox to access it and again it will start downloading in background and bitdefinder shows up internet activity at its peak.

naah, looks like its problem of firefox, i removed the plugin and tried downloading using the normal download winodw of firefox but same problem, this time it starts picking up item from the download window and continues to download

After closing all windows and trying to open a new window I get a message saying Fire Fox is running in another open window

When I close all windows and try to reopen fire fox I get a message that fire fox is already running in another window and needs to be closed to restart.

There are a few possible causes for that error, for details see [[Firefox is already running but is not responding]]

How to ensure that giving the firefox.exe command in run dialog box in Windows opens up a specific firefox Profile?

I have a firefox profile with certain proxy settings set. When I type firefox.exe in the run dialog Box in windows it opens up the default profile. I have a firefox shortcut specified with the command line args -P "profilename". I want this to be used as it will force the custom profile. Is there an environment variable that i can set for this?

You can set the default profile to use in the Profile Manager to be used when no profile is specified and otherwise use desktop shortcuts with a profile specified (-P "profile"). 
There is also a "Don't ask at startup" check box in the PM window.
*http://kb.mozillazine.org/Profile_Manager

Firefox process occasionally continues to run after closing browser in XP Pro 64 and uses 50% CPU

Every once in awhile after closing Firefox 3.6.13 the process continues to run. The way I discover this is my CPU temperature monitor is increasing from 36C to 50C, so I open the Task Manger and see that it is using 50% of the CPU, slowing down the computer. I am running XP Professional 64 bit SP2 with all the latest updates on an Intel E8400 3.0GHz overclocked to 3.6GHz and 4GB dual channel DDR2-1066 at 800MHz. This happens only occasionally, maybe once or twice a month. I just end the task and the temperature of the CPU drops and everything is normal again.

Norton IPS is apparently a known issue being mentioned in the KB articles:
*[[firefox will not start]]
* [[firefox crashes when you open it]]
* I also found an earlier post on the Norton site http://community.norton.com/t5/Norton-Internet-Security-Norton/Norton-IPS-1-0-Addon-for-FireFox/m-p/25425#M8494 but I am not sure this is still considered a problem.
What exactly is this IPS extension. I am currently using XPs with Norton's NIS (version 18.6 - it is a paid for subscription). I do have Intrusion Prevention active in NIS but I see no specific extension or program IPS. Is this some optional additional software?
I did find an explanation but from 2009
* http://community.norton.com/t5/Norton-Protection-Blog/Intrusion-Prevention-System-IPS-Your-first-line-of-defense/ba-p/124400
I am NOT using the Norton Toolbar etc. is it these components that are causing the problem i.e safe search etc.
I am not having problems with firefox hanging or continuing, despite using NIS.
There is a bug on this https://bugzilla.mozilla.org/show_bug.cgi?id=548945 but that does not seem to have got very far in confirming or resolving the issue. I imagine Norton have a very large userbase and it seems unlikely that the basic NIS is itself incompatible with Firefox.

Adobe 11.0.3 keeps running after closing the program and uses all cpu

After closing Adobe reader it remains in the background on task manager and uses about 25% of CPU for each instance, each time a pdf is closed it adds another instance in the background, when there are four my cpu is maxed out. I have to use my computer with task manager always running so I can end task each time I close a PDF. I tried the solution stopping welcome screen with registry fix and other fixes for prior versions, none help. Running Windows 8.

In order to deploy via GPO, you need to create AIP (Administrative Installation Point) for Reader 11.0 and then patch that AIP with 11.0.04 to create AIP of 11.0.04
Method:
1. Extract Reader 11.0.4 exe via the following command line,
AdbeRdr11004_en_US.exe -sfx_o"<extraction_path>" -sfx_ne
e.g. if you want to extract to c:\temp_folder
you should run the following command,
AdbeRdr11004_en_US.exe -sfx_o"c:\temp_folder" -sfx_ne
You should see the following six files in c:\temp_folder,
ABCPY.INI
AcroRead.msi
AdbeRdrUpd11004.msp
Data1.cab
setup.exe
Setup.ini
2. Now navigate to "C:\temp_folder" folder to create AIP for 11.0 in "C:\Rdr11AIP" and follow the wizard
msiexec /a AcroRead.msi TARGETDIR="C:\Rdr11AIP"
3. Now navigate to "C:\Rdr11AIP" to create AIP for 11.0.4 in C:\Rdr11AIP" and follow the wizard
msiexec /a AcroRead.msi TARGETDIR="C:\Rdr11AIP" PATCH=<"Path to 11.0.04 patch location">
for this example, "Path to 11.0.04 patch location" is going to be "c:\temp_folder\AdbeRdrUpd11004.msp"
So the command would be,
msiexec /a AcroRead.msi TARGETDIR="C:\Rdr11AIP" PATCH="c:\temp_folder\AdbeRdrUpd11004.msp"
4. You will see following files in your "C:\Rdr11AIP" folder,
AcroRead.msi
Common
CommonAppData
program files
Win
Windows
5. Now copy the contents of this folder to your network location and link the AcroRead.msi file in the Group Policy Editor, you are now ready the deploy 11.0.04
Hope, it helps.

Why does firefox continue to run after closing it?

I close out of an internet site and then go to another link and I get the box that says "Firefox is still running," I wait and try again and it still tells me this.I try several times,I then reboot and start over.How do I stop this?

Probably a problematic extension can cause the problem, see : [https://support.mozilla.org/en-US/kb/Firefox-hangs#w_firefox-hangs-when-you-quit-it Firefox hangs when you quit it]
thank you
Please mark "Solved" the answer that really solve the problem, to help others with a similar problem.

Firefox won't start even after disabling all plugins and reinstalling

Two days ago I updated my graphics card drivers (nvidia geforce) and it had some problems. I went into live chat support and after reinstalling some files it worked. Right after that Firefox wouldn't open, prompting me to restart or close. Hitting restart would take me the same place. It only opened in safe mode, where I deactivated the plugins related to the graphics card, and Firefox started normally.
Yesterday it didn't start again, even with those plugins deactivated. so I started in safe mode and deactivated all other plugins and it started. Today happened the same again but now I didn't have anything to deactivate so I could never start it. I unistalled and downloaded the installation file again and installed. The problem remained.
I went to the page Firefox crashes - Troubleshooting and filled in the crash report to mozilla crash reports page with the ID: 6cf4a525-9152-46f9-96f2-7ef282131023
The problem looks like it has something to do with the file mswsock.dll, but I'm affraid of deleting it.
Please help me.
Thank you,
Pedro

hello pedro, this crash is caused by the "Media Accelerator" part your nvidia graphics driver. please see if you can selectively disable it in the nvidia control panel or even uninstall it. otherwise please try [[Upgrade your graphics drivers to use hardware acceleration and WebGL|updating your graphics driver]], or in case this doesn't solve the issue or there is no new version available at the moment, disable hardware acceleration in ''firefox > options > advanced > general''.

[S] Firefox hangs on KDE install after all windows and tabs are closed

When I launch Firefox from KDE, the process hangs around consuming ~70-100% CPU of at least one core after closing all windows and tabs. We have to kill the process manually or say File->Quit and issue the real exit command instead of just closing all tabs. I ran strace and found that Firefox is poll()ing something as fast as it can after all windows are destroyed, causing the CPU increase. Anyone know how I can fix this? I've already tried a different profile and pacman -Rnd to no effect.
Last edited by cookiecaper (2010-08-27 18:06:55)

I've solved this by removing gtk-qt-engine; without gtk-qt-engine, firefox behaves as expected.

I have customized my Firefox toolbar. After closing the browser and then reopening it, the toolbar has returned to the way it was before I customized it. How do I get my customization of the toolbar to become permanent?

I have customized my Firefox toolbar several times. After closing the browser and then reopening it, the toolbar has returned to the way it was before I customized it each time. How do I get my customization of the toolbar to become permanent?
It has occurred with Firefox 4.0.1 and 5.0

see http://kb.mozillazine.org/Corrupt_localstore.rdf
Take a picture of your toolbars so you can easily reconstruct them from the default after solving the the problem.
If it happens to you it will probably happen again in the future so you might want to keep some copies of your modified localstore.rdf file so you can delete the bad one and rename one of the replacements in waiting. Saving, copying and renaming must be done with Firefox down, of course.

IPad slow despite closing all Apps and rebooting.

Original iPad 64GB 3G running iOS 5.0.1 is noticeably slow. Even after closing all Apps and rebooting, my machine runs slow. I tried draining the battery and still no improvement. Am I to conclude that iOS 5 combined with regularly updating my Apps rendered the processor obsolete?

As the result of months of web surfing and testing, I could narrow down the issue at is causing performance on all our original iPads! One would say to turn all the iCloud features off, but I have found that there are major performance bugs in contacts and calendars! Turn them off in the iCloud part if the settings. This, alone with disabling spotlight search results in no keyboard lag and no "checkerboard effect" in safari whe pages won't load fast enough! I hope this helps everyone as it did to me!

After closing Firefox to use IE8 or any other program, everything is very choppy and slow. I have to go into Taskbar, Processes, and close firefox.exe manually (which is using up all the memory/CPU). Then, and only then, does everything behave normally. W

After closing Firefox to use IE8 or any other program (like InterVideo to watch a DVD), everything is very choppy and slow. I have to go into Taskbar, Processes, and close firefox.exe manually (which is using up all the memory/CPU and should have closed before). Then, and only then, does everything behave normally. What is going on and what am I doing wrong or missing??
== This happened ==
Every time Firefox opened
== about a couple months ago and happens every time I close Firefox.

'''Kill Application'''
In Task Manager, does firefox.exe show in the '''Processes''' tab?
See: '''[http://kb.mozillazine.org/Kill_application Kill Application]'''
'''Causes and solutions for Firefox hanging at exit:'''
'''[[Firefox hangs]]'''
'''[http://kb.mozillazine.org/Firefox_hangs#Hang_at_exit Firefox hangs at exit (Mozillazine article)]'''
'''[[Firefox is already running but is not responding]]'''
'''Safe Mode'''
You may need to use '''[[Safe Mode]]''' (click on "Safe Mode" and read) to localize the problem. Firefox SafeMode is a diagnostic mode that disables extensions and some other features of Firefox. If you are using a theme, switch to the DEFAULT theme: Tools > Add-ons > Themes before starting Safe Mode. When entering Safe Mode, do not check any items on the entry window, just click "Continue in Safe Mode". Test to see if the problem you are experiencing is corrected.
See:
'''[[Troubleshooting extensions and themes]]'''
'''[[Troubleshooting plugins]]'''
'''[[Basic Troubleshooting]]'''
If the problem does not occur in Safe-mode then disable all of your extensions and then try to find which is causing it by enabling one at a time until the problem reappears. You have to close and restart Firefox after each change via File > Restart Firefox (on Mac: Firefox > Quit). You can use "Disable all add-ons" on the Safe mode start window.
'''''Other Issues''''': to correct security/stability issues
'''Update Java''': your ver. 1.6.0.19; current ver. 1.6.0.20 (important security update 04-15-2010)
''(Windows users: Do the manual update; very easy.)''
See: '''[http://support.mozilla.com/en-US/kb/Using+the+Java+plugin+with+Firefox#Updates Updating Java]'''
Do the update with Firefox closed.

After installing zone Alarm extreme 10, firefox.exe 32 stays running in the background after closing, making it not possible to open it again.

After installing the latest Zone Alarm Extreme v10, on windows 7 x64, when I close firefox, the window closes but firefox.exe 32 remains running in the background, which makes that when I want to open firefox again, after about a minute I get the error that an instance of firefox is still running. I go to task manager and end task of firefox.exe 32 and then open firefox again.
This is now happening regularly.

This seemed to come out of the blue, very much as described by anima42. I also am a Ubuntu 10.04 user. I have pondered on the first reply above, and though I don't, and didn't, use Tabberwocky, I was using Tab Mix Plus. Having removed this, the problem seems to have gone away. Another possible clue as to what went wrong: I use a constant Firefox profile located in my home directory. I dabbled with Ubuntu 11.04 a week or so ago, which runs (I think) a more updated Firefox. This Firefox was operating on my default profile, as you would. It may have broken something so it now doesn't play nicely with the 10.04 setup. Just surmising.

I use private browsing and passowords not remembered. yet after closing all firefox windows, i can access facebook and hotmail w/o my login info being requested

it used to ask me for them when i re-opened a window after closing all the previous ones!

Are you automatically reopening windows from the previous session via session restore?
*Tools > Options > General > Startup: "When Firefox Starts": "Show my windows and tabs from last time"
You can set the browser.sessionstore.privacy_level pref to 2 (never) or 1 (non-HTTPS) on the about:config page to disable saving cookies via session restore.
The browser.sessionstore.privacy_level_deferred pref is used when you do not reopen the previous session automatically via "Show my windows and tabs from last time" and uses the same values
* http://kb.mozillazine.org/browser.sessionstore.privacy_level
*http://kb.mozillazine.org/about:config

When exiting firefox the GUI shuts down but firefox.exe is sill running

Firefox starts and runs fine, but when time to exit, the GUI shuts down while firefox.exe is still running using 50% of possessor resources. I have to go into Windows Task Manager under processes and end program from there. Other wise firefox.exe will continue to run using more and more memory. If I try to start FireFox, then I get "Firefox already running".
Once I shut down firefox.exe with the Task Manger, Firefox will restart and run just fine.

Plug-in and tasks started by Firefox may continue after attempting to close Firefox. The "X" in the upper right-hand corner closes the Window (same as Ctrl+Shift+W) but even if it is the last Firefox window, it does not necessarily close Firefox .
The only proper way to exit Firefox is to use Exit through the File menu, not the "X" in the upper right corner of last Firefox window.
In 4.0 that would be Alt+F then X
"Restartless Restart" extension for Firefox 4.0 only (2 KB download )
https://addons.mozilla.org/firefox/addon/249342/
-- or --
"QuickRestart" extension (34 KB download)
https://addons.mozilla.org/firefox/addon/3559/
use to close and restart Firefox after enabling or disabling an extension, switching
to a new theme, or modifying configuration files, then you don't have to worry
about delay or have to look in the Task Manager to see if Firefox is closed yet.
Uses keyboard shortcut "Ctrl+Alt+R" or a file menu option.

Firefox exe continues to run after closing all windows, and consumes massive amounts of cpu

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