Firefox will go intoa "not responding" freeze mode

When I move from site to site or page to page firefox will go into a freeze and it says "not responding" and I have to wait awhile for it to return to normal. If I use Explorer I do not have that problem

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When running an app the Firefox will sudenly go "not responding" and lock up

What more can I say? There is no pattern. I can be running the app successfully and suddenly it goes "pale" and at top says "not responding". A sign may come telling me that and asking if I want to 1) wait for it to work (it seldom does) or 2) close it down, which means I lose all of the programs on the tabs.
WHY DOES IT DO THAT AND HOW CAN IT BE STOPPED?

What more can I say? There is no pattern. I can be running the app successfully and suddenly it goes "pale" and at top says "not responding". A sign may come telling me that and asking if I want to 1) wait for it to work (it seldom does) or 2) close it down, which means I lose all of the programs on the tabs.
WHY DOES IT DO THAT AND HOW CAN IT BE STOPPED?

Firefox browser keeps going into not responding mode and the firefox experts continue to "not respond" to the problem. Firefox 11.0 and W7.

Firefox browser keeps going into not responding mode and the firefox experts continue to "not respond" to the problem. Firefox 11.0 and W7. When will you respond??

Try to start Firefox in [[Safe mode|Safe mode]]. This mode disables all extensions, user customizations, hardware acceleration, etc. temporarily for diagnostic and troubleshooting. If Firefox works find in Safe Mode, then this is likely an add-on issue. Restart Firefox in normal mode, then type "About:addons" (without the quotes) in the address bar. Disable your extensions one by one, restarting Firefox between each one, until you find the trouble maker. Once you do, you can disable that add-on and report the issue to that add-on's developer.
A few other basic trouble shooting things you can try is this:
Run all Windows Updates, install all needed service packs, etc.
Update your graphics driver (Firefox uses your graphics card for some rendering, and an out of date graphics card driver can cause problems. [https://support.mozilla.org/en-US/kb/how-do-i-upgrade-my-graphics-drivers https://support.mozilla.org/en-US/kb/how-do-i-upgrade-my-graphics-drivers].
Update all your plugins (Flash, Java, etc.): [http://www.mozilla.org/plugincheck/ http://www.mozilla.org/plugincheck/].
Download and Install MalwareBytes Anti-Malware, run a full Scan. [http://www.malwarebytes.org/ http://www.malwarebytes.org/]. This helps check that there are no viruses on your computer causing issues. you can uninstall this program after you clean off any infections.
Now when Firefox hangs, is this randomly, on specific websites, etc.? You can also read [https://support.mozilla.org/en-US/kb/Firefox-hangs https://support.mozilla.org/en-US/kb/Firefox-hangs]

I to use iphoto library manager to save corrupted iphoto and each time it saves some and the first time it brings up iphoto, iphone goes into "not responding" mode. Using mac book pro, iphoto 9.5.1, and maverick 10.9.2.

I've had issues with my iPhoto "not responding" and as a result I am attempting to save my photos to an external hard drive using iPhoto library Manager but each time I start the program it saves some, and then when it starts iPhoto, iPhoto then goes into not responding mode. Using mac book pro, iphoto 9.5.1, and maverick 10.9.2. I have completed all of the photo library first aid steps several times, but it makes no difference, iphoto eventually goes to "not responding." Initial issues started with Time Machine back ups stopping because of iphoto. Thanks......

Do you have a back up?
If you're just trying to recover the photos you can do that much more simply:
Go to your Pictures Folder and find the iPhoto Library there. Right (or Control-) Click on the icon and select 'Show Package Contents'. A finder window will open with the Library exposed.
Look there for a Folder called 'Originals' or 'Masters'. (varies according to the version of iPhoto)
Your photos are inside - these are the originals as imported from your camera.

Firefox not responding, freezes, sometimes responds after a few minutes, other times a pop-up appears asking if I want to stop script - help please

firefox not responding, freezes, sometimes responds after a few minutes, other times a pop-up appears asking if I want to stop script - help please

Start Firefox in [[Safe Mode]] to check if one of the add-ons is causing the problem (switch to the DEFAULT theme: Tools > Add-ons > Themes).
* Don't make any changes on the Safe mode start window.
See:
* [[Troubleshooting extensions and themes]]
* [[Troubleshooting plugins]]
If it does work in Safe-mode then disable all extensions and then try to find which is causing it by enabling one at a time until the problem reappears.
* Use "Disable all add-ons" on the [[Safe mode]] start window to disable all extensions.
* Close and restart Firefox after each change via "File > Exit" (Mac: "Firefox > Quit"; Linux: "File > Quit")

We use Thunderbird all the time and love it, but for about a week it constantly goes into not responding mode. My boss uses the same service at home with no pr

Thunderbird is a great asset to my boss and I. We use Thunderbird all the time and love it, but for about a week it constantly goes into "not responding mode". My boss uses the same service at home with no problem at all.
I did an "safe mode" and restart and for a few minutes I thought it was "healed". However, I did a search and the same thing started happening again. The little blue ring starts spinning and "not responding" pops up above the toolbar. Sometime the screen fades to a sort of greyish and no mouse click are responded to, even to close Thunderbird.
Please help however you can. Our office number is 512.246.3995.
Thank you,
Mary

We wonder if it is a firewall problem that developed here at the office. My boss uses her account at home and all is well, but here, experiences the same issues I described

I keep getting a message that Firefox is open and not responding. That I have to close the Firefox application or restart my computer. A real pain. Why is the firefox application not closing in English

I keep getting a message that Firefox is open and not responding. That I have to close the Firefox application or restart my computer. A real pain. Why is the firefox application not closing.

Sounds like Firefox is "hanging at exit". That problem is frequently caused by an Extension or a Plugin. Read all of the following articles. 
NOTE: Establish a habit of exiting/closing Firefox with Firefox button > Exit or File > Exit to allow an orderly shutdown of Firefox and closing of all of the files that Firefox has open.
#Stop the Firefox process:
#*[http://kb.mozillazine.org/Kill_application Mozillazine - Kill application]
#*Windows 7 users click [http://www.techrepublic.com/blog/window-on-windows/reap-the-benefits-of-windows-7s-task-manager/2576 here]
#*Mac users: http://techheavy.com/2011/02/the-mac-task-manager/
#Why Firefox may hang:
#*[http://support.mozilla.org/en-US/kb/Firefox+hangs Firefox hangs] (see Hang at exit)
#*[http://kb.mozillazine.org/Firefox_hangs Firefox hangs (Mozillazine)] (see Hang at exit and Closing Firefox properly)
#*[https://support.mozilla.org/en-US/kb/Firefox+is+already+running+but+is+not+responding Firefox is already running but is not responding]
#Use Firefox Safe Mode to find a problem with an Extension or Plugin:
#*Don't check anything when entering Safe Mode, just continue
#*If the problem does not occur in Safe Mode it is probably an Extension or Plugin causing the problem
#*See:
#**[[Safe Mode]] and [http://kb.mozillazine.org/Safe_Mode Safe Mode (Mozillazine)]
#**[http://support.mozilla.org/en-US/kb/Troubleshooting+extensions+and+themes Troubleshooting extensions and themes]
#**[http://support.mozilla.org/en-US/kb/Troubleshooting+plugins Troubleshooting plugins]
#**[http://support.mozilla.org/en-US/kb/Basic+Troubleshooting Basic Troubleshooting]
'''If this reply solves your problem, please click "Solved It" next to this reply when signed-in to the forum.'''
Not related to your question, but...
You may need to update some plug-ins. Check your plug-ins and update as necessary:
*Plug-in check --> http://www.mozilla.org/en-US/plugincheck/
*Adobe Shockwave for Director Netscape plug-in: [https://support.mozilla.org/en-US/kb/Using%20the%20Shockwave%20plugin%20with%20Firefox#w_installing-shockwave Installing ('''''or Updating''''') the Shockwave plugin with Firefox]
*Adobe PDF Plug-In For Firefox and Netscape: [https://support.mozilla.org/en-US/kb/Using%20the%20Adobe%20Reader%20plugin%20with%20Firefox#w_installing-and-updating-adobe-reader Installing/Updating Adobe Reader in Firefox]
*'''''Shockwave Flash''''' (Adobe Flash or Flash): [https://support.mozilla.org/en-US/kb/Managing%20the%20Flash%20plugin#w_updating-flash Updating Flash in Firefox]
*'''''Next Generation Java Plug-in for Mozilla browsers''''': [https://support.mozilla.org/en-US/kb/Using%20the%20Java%20plugin%20with%20Firefox#w_installing-or-updating-java Installing or Updating Java in Firefox]

Computer says firefox is open but cant be found so I have to close computer and start over. computer says firefox is open but not responding

computer on,icons showing,open firefox and I get a firefox is open but not responding.Computer tells me to close computer programs and restart. when I go to close, no programs are open. I hit cancel on shutting down and go back to firefox icon and It opens.

Hello,
Certain Firefox problems can be solved by performing a ''Clean reinstall''. This means you remove Firefox program files and then reinstall Firefox. Please follow these steps:
'''Note:''' You might want to print these steps or view them in another browser.
#Download the latest Desktop version of Firefox from http://www.mozilla.org and save the setup file to your computer.
#After the download finishes, close all Firefox windows (click Exit from the Firefox or File menu).
#Delete the Firefox installation folder, which is located in one of these locations, by default:
#*'''Windows:'''
#**C:\Program Files\Mozilla Firefox
#**C:\Program Files (x86)\Mozilla Firefox
#*'''Mac:''' Delete Firefox from the Applications folder.
#*'''Linux:''' If you installed Firefox with the distro-based package manager, you should use the same way to uninstall it - see [[Installing Firefox on Linux]]. If you downloaded and installed the binary package from the [http://www.mozilla.org/firefox#desktop Firefox download page], simply remove the folder ''firefox'' in your home directory.
#Now, go ahead and reinstall Firefox:
##Double-click the downloaded installation file and go through the steps of the installation wizard.
##Once the wizard is finished, choose to directly open Firefox after clicking the Finish button.
More information about reinstalling Firefox can be found [https://support.mozilla.org/en-US/kb/troubleshoot-and-diagnose-firefox-problems?esab=a&s=troubleshooting&r=3&as=s#w_5-reinstall-firefox here].
WARNING: Do not run Firefox's uninstaller or use a third party remover as part of this process, because that could permanently delete your Firefox data, including but not limited to, extensions, cache, cookies, bookmarks, personal settings and saved passwords. These cannot be recovered unless they have been backed up to an external device!
Please report back to see if this helped you!
Thank you.

When i put my Mac for sleep it takes more time than normal ( 20 secs). Sometimes, coming back from sleep the system is not responding (freeze).

When i put my Mac for sleep it takes more time than normal (>20 secs). Sometimes, coming back from sleep the system is not responding (freeze).

Perform SMC and NVRAM resets:
http://support.apple.com/en-us/HT201295
http://support.apple.com/en-us/HT204063
The try a safe boot:
http://support.apple.com/en-us/HT201262
Any change?
Ciao.

ITunes goes into (not responding) when tries to update library

How can i get my mac around this problem? iTunes goes into (not responding) when tries to update library

I just posted with the same question

I have the latest version but I am continually told that Firefox is running but not responding and that I need to close Firefox or restart my computer to clear the problem. Why is this happening?

I have the latest version but I am continually told that Firefox is running but not responding and that I need to close Firefox or restart my computer to clear the problem. Why is this happening?

See "Hang at exit":
*http://kb.mozillazine.org/Firefox_hangs
*https://support.mozilla.com/kb/Firefox+hangs
See also:
* http://kb.mozillazine.org/Profile_in_use
* https://support.mozilla.com/kb/Firefox+is+already+running+but+is+not+responding

After stopping FF when I restart it , I get a pop up displaying Firefox already running but not responding. Please Help?

After stopping FF when I restart it , I get a pop up displaying Firefox already running but not responding. Please Help?

There are several possible causes, see [[Firefox is already running but is not responding]].

I installed Spyware Doctor with antivirus and Firefox will not open but goes into Not Responding mode

After installing PC Tools spyware doctor with antivirus Firefox will not launch. I get a black screen with a not reponding message at the the top. I have tried an earlier version of Firefox (5) and this launch OK until I closed it and then it too refused to launch.

Hit the '''Alt''' key to show the Menu bar, then open View > Toolbars and select Menu bar and Navigation bar, so they have a check-mark.

Installer freezes after download is done. Instantly goes into not responding when I try.

Instantly says not responding the second I try to run it. I deleted the install file and tried to re-download, but I get the same problem. I don't know if it helps at all, but this is the error it was giving me in console when I would try to run it and it would stop responding.
"8/28/14 11:36:08 AM Install OS X Mavericks[1902] Error loading /Applications/Install OS X Mavericks.app/Contents/PlugIns/IACoreStorage.IABundle/Contents/MacOS/IACoreStor age: dlopen(/Applications/Install OS X Mavericks.app/Contents/PlugIns/IACoreStorage.IABundle/Contents/MacOS/IACoreStor age, 265): Library not loaded: /usr/lib/libcsfde.dylib
Referenced from: /Applications/Install OS X Mavericks.app/Contents/PlugIns/IACoreStorage.IABundle/Contents/MacOS/IACoreStor age
Reason: image not found"
thanks for any help

Try a restart.
Do a backup, using either Time Machine or a cloning program, to ensure files/data can be recovered. Two backups are better than one.
Try setting up another admin user account to see if the same problem continues. If Back-to-My Mac is selected in System Preferences, the Guest account will not work. The intent is to see if it is specific to one account or a system wide problem. This account can be deleted later.
Isolating an issue by using another user account
If the problem is still there, try booting into the Safe Mode using your normal account. Disconnect all peripherals except those needed for the test. Shut down the computer and then power it back up after waiting 10 seconds. Immediately after hearing the startup chime, hold down the shift key and continue to hold it until the gray Apple icon and a progress bar appear. The boot up is significantly slower than normal. This will reset some caches, forces a directory check, and disables all startup and login items, among other things. When you reboot normally, the initial reboot may be slower than normal. If the system operates normally, there may be 3rd party applications which are causing a problem. Try deleting/disabling the third party applications after a restart by using the application un-installer. For each disable/delete, you will need to restart if you don't do them all at once.
Safe Mode
Safe Mode - Mavericks

Since windows 8.1 update firefox says not responding/freezes when trying toread emails help

windows 8.1 running firefox for several weeks no issues windows did some sort of update automatically last week and now error message on firefox most of the time says "not responding" and freezes have tried to restore to a week or so ago and can sometimes get to open read emails but sometimes it just hangs and then freezes and I have to close down firefox unable to read emails...help

mrfastbaz has not replied so I am closing this topic.
Anyone still seeing this problem should post a new topic.

Firefox will go intoa "not responding" freeze mode

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