Firefox is having "Script" issues (Not Responding) und possibly Flash issues?

Okay, downloaded Firefox for the first time in like a year yesterday. It was working beautifully, oh, how I've missed it. I hate using Google Chrome with a fiery burning passion.
However, though it was working perfectly yesterday, I have not downloaded anything or got any plug-ins/extensions, whatever.
Today, however, I can go to www.google.com (on firefox), but if I try to go to my banks website, or imvu.com, or something like that, all the sudden Firefox decides to hang. It freezes und I get that annoying "(Not Responding)" at the top. I have to close out of the browser entirely, open it up und forgo the session restore.
Some websites are okay, however, it seems many of them aren't.
I get a script error message, so far the one for imvu.com that popped up was "lookout.bluecava" or something like that. Asked if I wanted to wait for script to respond or if I wanted to stop it. Either way, it ends with me closing out und starting back at google.
Right now, to ask this question, I had to re-download google chrome, und log in from that browser since Firefox doesn't even want to support it's own support forum! Crazy stuff, right?
Anyway, since it's having a "script" issue, I went to java, made sure I had the updated java installed on my computer, then I made sure that I had the updated java plug-in. Und I even downloaded the 64bit java for it as well, both the 7u45 or whatever.
So, my java on my comp und firefox browser are seemingly up to date, und the Add-On thing for Firefox to check if plugins are up to date says they all of them are up to date.
Still having the issue. The moment I go to imvu or another site that has that issue, it freezes within 10 seconds und that's all she wrote.
So, I'm really not wanting to go back to Google Chrome for another year, I miss the hell out of Firefox.
To Add: The issue I am having right now with Firefox is the same issue I had a year ago, when I had to uninstall firefox und go with Chrome in the first place.
But, since it was acting normal yesterday when I installed it, I figured that it was fixed. Wrong in less than 24 hours.
Before I submitted this, I decided to hop back onto Firefox und try something.
I disabled the Shockwave Flash und the Shockwave Director plugins. Now, Firefox is working again.
Sooooooooooooooooooooooooooooooooo.
It asks me if I want to install the "flash" plugins needed to view some content on the page (I used imvu.com to try it out after disabling the shockwave), but still runs.
So, what do I need to do for flash? Or better yet, what's going on with it?
I downloaded the flash yesterday within half an hour of starting Firefox up after downloading it. Und it worked just fine for hours.
I shut the comp down, packed it up, went home, come back to work, hop on the net und BAM. All the sudden Shockwave is having issues with Firefox when nothing was done to instigate it? Doesn't make sense.
Other info:
Windows 7 Home Premium on HP laptop.

I will give Firefox 24.1 a try und see if shockwave flash actually works without making it hang und resulting in need of force close.

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HT1338 hi, my firefox and safari are both having difficulty loading certain parts of web pages. previous to this my firefox would freeze and state that a script was not responding. i would stop the script and reload the page and everything would be fine.

hi, my firefox and safari are both having difficulty loading certain parts of web pages. previous to this my firefox would freeze and state that a script was not responding. i would stop the script and reload the page and everything would be fine. now though the pages just load very very slowly or load leaving out certain pictures and video content. i've tried clearing my cache's and cookies, resetting my browser etc, but it seems like its a system issue as both safari and firefox are having issues. i've run Avast to screen for malware and it came up empty. any suggestions?

10.4.8's been a pain for Networking... not sure of all the reasons though, or whether all the complaints might not be MS working around Bugs/Non-compliance, but at this point I think you should get Applejack...
http://www.versiontracker.com/dyn/moreinfo/macosx/19596
After installing, boot holding down CMD+s, then when the prompt shows, type in...
applejack AUTO
Then let it do all 5 of it's things.
Fixes a lot of problems, and besides, if your Mac ever gets to the point it won't Boot... this is a life saver!
After you run that... let's see where we are.
BTW, several ISPs seem to have trouble with their DNS Servers lately, might try these insead...
208.67.222.222
208.67.220.220

Every time I try to use BBC i player firefox will freese and i will get a notification telling me that the script is not responding

Firefox will freeze when i use BBC i player and i get a notification telling me the script is not responding and if i want to stop it.

Internet explorer should be installed by default and should work, even if it is old.
Is your computer itself (the Windows XP Operating System) and other programs crashing, not just Firefox ?
You may need to check you Hard Disk drive is ok, and what amount of space has it in GB and as %
Also see [[Firefox hangs or is not responding - How to fix]]

I am having trouble with Firefox not closing properly. I close a session and when I try to open firefox again it tells me firefox is already running and not responding.

When I close Firefox and try to open the browser next time it tells me Firefox is already running and not responding.

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

It always says:Firefox is already running but not responding; what can i do to fix this problem; it has only started after having downloaded the latest verion.

I downloaded the latest version of firefox and the problem has started; it aways says: "Firefox is already running, but not responding. To open a new window you must first close the existing Firefox process or restart your system; I have to do this about 3 times for the internet to come on again; what can I do, short of calling a technician??

Please read this article: [[Firefox is already running but is not responding]]

For the last two days, firefox has been freezing or Not Responding and giving error message

every 30 seconds or so firefox tells me it is not responding. and once it comes back it gives me the following error message.
A script on this page may be busy, or it may have stopped responding. You can stop the script now, or you can continue to see if the script will complete.
Script: http://cdn4.specificclick.net/img/?ag=1&pb=9788&pg=293059886053054629&us=IuOJnv_awGu5HD&nwk=1&rnd=53585:3534
I did install a java update, don't know if this is related.

It's possible that you are having a problem with some Firefox add-on that is hindering your Firefox's normal behavior. Have you tried disabling all add-ons (just to check), to see if Firefox goes back to normal?
Whenever you have a problem with Firefox, whatever it is, you should make sure it's not caused by one (or more than one) of your installed add-ons, be it an extension, a theme or a plugin. To do that easily and cleanly, run Firefox in [http://support.mozilla.com/en-US/kb/Safe+Mode safe mode] (don't forget to select ''Disable all add-ons'' when you start safe mode). If the problem disappears, you know it's from an add-on. Disable them all in normal mode, and enable them one at a time until you find the source of the problem. See [http://support.mozilla.com/en-US/kb/Troubleshooting+extensions+and+themes this article] for information about troubleshooting extensions and themes and [https://support.mozilla.com/en-US/kb/Troubleshooting+plugins this one] for plugins.
If you need support for one of your add-ons, you'll have to contact its author.
If the problem does not disappear when all add-ons are disabled, please tell me, so we can work from there. Please have no fear of following my instructions to the line, as all can be easily undone.

HELP NEEDED. Plugin container stopped working / Script does not respond

Hi!
I am aware that there are numerous articles about this problem, but unfortunately none of them solves my problem.
Very frequently, at least once a day (usually from 3 to even 7 times a day) my Mozilla Firefox freezes and I am forced to restart it. It typically occurs when I try to open a page with some interactive content in it (youtube, some fancy flash pages, even gmail document preview). When I try to close it, Windows pops up a message saying that "Firefox stopped working" and terminates the application itself, and then another window pops up, saying "Plugin Container for Firefox stopped working". It's usually either that, but sometimes Mozilla also shuts itself without any warning and the same message appears.
As for "script does not respond", it does happen as well, although way more seldom. Usually it happens on the pages with lots of images. The whole browser then freezes for couple of seconds, then it pops up a window saying that the script does not respond and asks whether I want to force it to continue or not. It doesn't make any difference which option I choose because usually the browser crashes anyway.
I am using version 34 and I made sure all my plugins and addons are up to date. I also disabled hardware acceleration and tried to reinstall whole flash thing. I wonder whether it's the fault of one of my addons, but I admit I am not too eager to try and disable them all and then test it one by one because it would take up way too much time.
Apart from that, none of the previous solutions seem to help, and the problem really gets on my nerves because numerous times I lost a huge block of text I was writing. Now I learned to copy everything I write couple of times :/
Maybe the crash reports will help. I'll link them from the newest to the oldest (for some weird reason they are 3 crash reports from today, yesterday and 3 days ago - weird, because the browser has shut itself today at least twice, not to mention previous days):
https://crash-stats.mozilla.com/report/index/ba7f5087-3d7d-4b2c-b9b1-04e6d2150105
https://crash-stats.mozilla.com/report/index/72eaf792-5f06-445b-806c-cd7922150104
https://crash-stats.mozilla.com/report/index/c3f81ff8-df10-45a6-8400-1c5912150103
I'll be glad for any help because, honestly, I can't stand it anymore. No reinstalling of Firefox or restoring settings to default have helped me yet.

Hmm, that's pretty bad. Often if Windows is stepping in with the crash report, then the issue is with a driver incompatibility, most commonly a display driver.
Here are a couple things to try:
(1) Disable Firefox from using hardware acceleration
This is the traditional workaround. You can use:
"3-bar" menu button (or Tools menu) > Options > Advanced
On the "General" mini-tab, uncheck the box for "Use hardware acceleration when available"
That takes effect the next time you exit and start Firefox up again, which the way you describe it, might be quite soon.
(2) Disable the Flash player plugin from using hardware acceleration
This is a separate setting. See this support article from Adobe: http://helpx.adobe.com/flash-player/kb/video-playback-issues.html#main_Solve_video_playback_issues
(3) Disable the Flash plugin's protected mode feature
Protected mode has security benefits, but is not compatible with all systems for some reason. It can stall scripts on some systems, for example. You can disable the feature by creating or editing a settings file. The following pages/posts provide different approaches:
* Adobe support article under the heading "Last Resort": [http://forums.adobe.com/message/4468493#TemporaryWorkaround Adobe Forums: How do I troubleshoot Flash Player's protected mode for Firefox?]
* Manual steps: https://support.mozilla.org/questions/968190?page=5#answer-509209
* Batch file to automate the manual steps: https://support.mozilla.org/questions/982093#answer-518078 (alternate version of Carm's batch file with a few changes by me: [https://onedrive.live.com/?cid=f7d304d92388737d&id=F7D304D92388737D!336&ithint=file,.bat&authkey=!AP2FXW2Y_3BXZyo])
Any improvement?

Firefox is already running but not responding,No process in task manager,Restart and uninstall not useful.Profile manager error

So one day when I opened my mozilla firefox Ive got the "Firefox is already running but not responding.To open a new window,you must first close the existing firefox process,or restart your system."
So I checked my task manager but there is no process,I then checked hours in the internet to find a solution.Yes,I also checked for solutions in this site.Then,I try uninstalling and restarting,it also didn't work,Next I also tried downloading profilemanager and tried to run it but as unlucky as I can be,it also didn't work. Please help :(

The Reset Firefox feature can fix many issues by restoring Firefox to its factory default state while saving your essential information.
Note: ''This will cause you to lose any Extensions, Open websites, and some Preferences.''
To Reset Firefox do the following:
#Go to Firefox > Help > Troubleshooting Information.
#Click the "Reset Firefox" button.
#Firefox will close and reset. After Firefox is done, it will show a window with the information that is imported. Click Finish.
#Firefox will open with all factory defaults applied.
Further information can be found in the [[Reset Firefox – easily fix most problems]] article.
Did this fix your problems? Please report back to us!

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]

Firefox 29.0.1 on Windows 7 (64-bit): ALWAYS get "Firefox is already running but not responding..." error and need Task Manager to close/restart Firefox.

I run Firefox 29.0.1 on Windows 7 (64 bit) and I get the "Firefox is already running but not responding. In order to open the program you must close the existing window." error. EVERY TIME I try to start Firefox. The posted solution works to start the program, but it is not a permanent solution. I go through the Task Manager and end the old Firefox process, then I can open a new window. While working, I can open multiple tabs and multiple windows, everything seems to (usually) work the way it should. Then after I completely exit Firefox, in order to open the program again I need to fix the SAME error again. Every time. It doesn't seem to hurt anything really, but it is quite annoying.
I used to get this same error on some of the older Firefox versions but it was only once in a while. With the new 29.0.1 it is literally EVERY TIME I TRY TO RUN FIREFOX!!!!
So, down to the big question: is there a permanent fix for this yet? Or will there be one included in the next version update? Or am I going to have to go back to Internet Explorer? I know I am not alone in this experience; i've seen several other users posting similar questions but none of them received satisfactory answers. So what's the story here, team Firefox?

'''https://support.mozilla.org/questions/997866?esab=a&s=&r=1&as=s'''. 
This is not a cure but will make it easier if Firefox locks up.

On switching on, a message says 'Firefox is already running but not responding...........' then tells me to close it and restart but how can I close it when the page isn't yet displayed?

When I switch on my computer I get the desktop then I try to click on Mozilla Firefox but get the message, 'Firefox is already running but not responding. To open a new window you must first close the existing Firefox process or resart your system.' I looked up how to close but I need to click on 'file' then 'exit'. How can I do that when I can't see the page yet? IE is working fine.

See also [[Firefox is already running but is not responding]]

"Firefox is already running but not responding" - have tried all the usual solutions.

The message I'm getting is the standard: "Firefox is already running, but is not responding." I'm using a PC with Windows 7.
I've tried:
- Opening task manager and manually ending the process. This didn't work because the process is not listed in applications, processes, or services.
- Deleting the parent/lock file. This didn't work because the file is not in any of the firefox folders. I've checked APPDATA/Local/Firefox as well as APPDATA/Roaming/Firefox, and the original install folder just to be thorough. It's not a hidden file either - I have those set to display.
- Creating a new profile and importing settings from the old one. I can't import settings because the old profile is still running.
- Restarting before and after each of these potential solutions, including restarting in safe mode, shutting off the computer and waiting a bit before restarting, etc.
All I really want back are my bookmarks, which I've spent quite a while creating. Unfortunately, there is no file I can find for the default profile that has the bookmarks stored. When I created a new profile, a folder appeared with its name in the APPDATA/Roaming/Firefox folder, with all of the bookmarks, etc. There is no such folder for the default profile though - which is the one I want. I've even tried switching to Chrome and importing bookmarks, but that doesn't work because the bookmarks can't be imported while Firefox is still running.

Does a new profile work? 
* http://kb.mozillazine.org/Creating_a_new_Firefox_profile_on_Windows
If there is no profile present then you also get that error about "Firefox is already running but not responding"
If you uninstalled Firefox at any time in the past and removed your personal data or deleted that profile folder yourself then you no longer have a profile to start with or restore files from.
See:
* http://kb.mozillazine.org/Recovering_a_missing_profile
* http://kb.mozillazine.org/Profile_in_use

Firefox is already running, but not responding to open a new window

I closed the only opened Firefox process that was running. Then clicked the Fox to start Firefox again. I received a message: Firefox is already running, but not responding, to open a new window. You must close the existing Firefox process, or restart your system. This is a stupid message since there is no Firefox in process.
== This happened ==
Not sure how often

Hello Lara.
Hopefully this support article is what you need:
http://support.mozilla.com/en-US/kb/Firefox+hangs#Hang_at_exit

I am connected to the internet and I close all tabs on the screen. Now I want to open a new tab, but Firefox opens a pop-up window stating"Firefox is already running, but not responding . To open a new window, you must first close the existing Firefox pr

I am connected to the internet, but all tabs are closed. Now I want to open a new tab, But Firefox pops-up with "Firefox is already running, but not responding. To open a new window, you must first close the existing Firefox process, or restart your system". Does anyone here know how to fix this? Thank´s, BL.
== This happened ==
A few times a week

Firefox is shutting down windows I want to remain open. Example: I am done viewing one window. I click the X to shut the window and it shuts two windows. Every single time, attempt to close one windows, two windows close. Lately, I have been opening several windows with nothing but google search, just so it will shut that window and not something else I want to remain open. I could understand this if I was using tabs, but I am not. This has been going on for over two weeks. I don't like going back to history to open a window, I did not want closed in the first place. Isn't that what 'Windows' is all about? Any ideas?

I have recently been having problems using Firefox: it continually gives a "Not Responding" message.

I have been having problems using Firefox for the past few months:
Whenever I log on, I get a "Not Responding" message, and Firefox "freezes." I then have to "click" my mouse several times to again be able to use Firefox - but only for a few minutes. Firefox then freezes again and shows another "Not Responding" message.
Because of this repeated "crashing," I have been using I.E. as my browser, because it does NOT have any such problems.
How can I FIX this problem with Firefox?

Many site issues can be caused by corrupt cookies or cache. 
Clear the Cache 
'''''Firefox/Tools > Options > Advanced > Network > Cached Web Content: "Clear Now"'''''
 and 
Remove Cookies '''''Firefox/Tools > Options > Privacy.''''' 
Under '''History''', select Firefox will '''Use Custom Settings'''. 
There is a button on the right side called '''Show Cookies'''. 
If there is still a problem,
'''''[https://support.mozilla.org/en-US/kb/troubleshoot-firefox-issues-using-safe-mode Start Firefox in Safe Mode]'''''
 While you are in safe mode; '''''Firefox Options > Advanced > General'''''. 
Look for and turn off '''Use Hardware Acceleration'''. 
Poke around safe web sites and see if there is still a problem. Then restart.

Firefox is having "Script" issues (Not Responding) und possibly Flash issues?

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