Need help troubleshooting problem: Flash hangs after using Firefox (on mac) back button - works fine on all other browsers

to reproduce:
1. click on a flash button that takes you to a new html page
2. hit the back button on browser
3. flash button hangs
I've included a test page as an example below.
the bug is specific to having used the flash button and is specific to the Mac version of firefox. The PC version seems to work fine.

What is the address of the first page? The only thing that link you posted in your information was the page that says, "now hit the back button and see if flash hangs after clicking on the flash button".

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Apparently it's related to the Firefox plug in.
This isn't exactly a solution but more of a way to avoid opening PDFs with Firefox's plug in.
1. Highlight "Tools" from the Menu Bar in the top left of the screen (or click "Options" if using the Firefox Compact Menu)
2. Select to "Options
3. Select "Applications"
4. Look for "Adobe Acrobat Document" under Content Type and to the right under Action select "Use Adobe Reader (default)" instead of the using Adobe Acrobat in Firefox
5. Open a test PDF. It should open in it's own window now.
Again, not a complete solution but something that'll at least let you scroll with PDFs open.
More info here: http://forums.mozillazine.org/viewtopic.php?f=38&t=2171033

Using KineticJS in Firefox causes memory leak (page works good in all other browsers, including Firefox Beta for Android)

Hi,
You can visit http://brandy.pararuk.com and see just 15 flying comets animated with KineticJS library.
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Did you try to disable extensions like Firebug?
Start Firefox in <u>[[Safe Mode|Safe Mode]]</u> to check if one of the extensions (Firefox/Tools > Add-ons > Extensions) or if hardware acceleration is causing the problem (switch to the DEFAULT theme: Firefox/Tools > Add-ons > Appearance).
*Do NOT click the Reset button on the Safe mode start window or otherwise make changes.
*https://support.mozilla.org/kb/Safe+Mode
*https://support.mozilla.org/kb/Troubleshooting+extensions+and+themes

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site is: http://bumblebeetoys.com/
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2. Turn on computer and launch iTunes (make sure you have the latest version of iTune)
3. Plug USB cable into computer's USB port
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ON COMPUTER
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7. Select "Restore iPad"...
Note:
1. Data will be lost if you do not have backup
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Could you list the make and model numbers of your dsl modem and your wireless bridge please?

Flash 13.0.0.214 does NOT work on some sites, but works fine on all others

Hi!
I watch several wildlife nest-cams every day running Windows 8 using Firefox 29.0.1, but yesterday morning, (after I'd already watched the 6 cams I view every day), I started getting a solid, black screen with, "Error loading plugin: Plugin file not found", on TWO of these sites.
My attempts to resolve the problem were:
1. Checked all the other web-cam sites I view daily, and there's only a problem on 2 of them.
2. Went to You Tube, Facebook & other similar sites and I can view streaming media.
3. Refreshed pages-when that didn't help, I closed & reopened Firefox & still 2 sites with "plugin loading error"
4. Completely shut-down my laptop & rebooted.
5. Did "System Restore" to earlier in the day when ALL web-cam sites were working.
6. Went to Adobe Flash site & verified that I had the most current version...I do, & I saw the animations on Flash site.
7. Verified my Flash Plugins in Firefox...AGAIN...they're all activated & up-to-date
8. Checked & re-checked ALL the web-cam sites I view every day, (for, at least the 10th time), and the
     same 2 sites are still showing the "Error loading plugin: Plugin file not found" on a black screen. Even
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     thought I should mention it).
9. I posted the issue on Firefox's Forum but no one has an answer since Flash works everywhere except
     for 2 sites.
I've tried everything I can think of to troubleshoot this, but as you can see, I've had no success in solving this "mystery".
As for the 2 sites I can't view, they are:
                                    http://www.pixcontroller.com/eagles/    And
                                    http://www.westmorelandconservancy.org/BlueBirdWebcam-1.htm
I've been watching these sites for MONTHS, so why I can't view them all of a sudden, well, I'm clueless, (I guess you already figured that out...ha ha ha). I was watching the 2 sites listed above early yesterday morning, then when I looked at one of the other cams I view and came back to these 2 sites, I got the "error message".
I hope you have a solution for me, as I'm desperate! I'm WAY behind in my documentation for these 2 sites, so hopefully you'll have an easy answer. If it's a technical thing, please use LOTS of details, as I'm not very technically inclined.
Thanks in advance for your help!
Best Regards,
DogPal
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Message was edited by: Donna ....I had additional information

First, thank you for a very good and detailed description of your problem; so few people provide any information when asking for help.
Trying to reproduce; the first of your links works fine on Firefox, PaleMoon, and Internet Explorer.
The second link only shows a blue screen after the ad (on the same three browsers)
What is your installed Flash Player version? See Flash Player Help | Flash Player Help
Can you also try on a different browser such as Internet Explorer?

I can't get to any websites using Firefox or IE but AOL works fine.

When I open Firefox or IE, the home pages are fine but then both just hang without loading any websites. Both just show the progress wheel circling. Sometimes clockwise green and sometimes counter clockwise gray. No issues with AOL. Problem started a couple of days ago after a scheduled computer update. Before that, I would get messages on Firefox that shockwave plugin and/or java plugins stopped working or crashed but would still be able to access sites like ebay. I've repeatedly uninstalled and reinstalled Firefox which would work for briefly and then revert back to nothing happening. Repeatedly restarting the computer would allow both browsers to access a site or two and then they would freeze. Ran a full scan on Norton with no problems or malware discovered. Updated Java and I've also checked to see that there was no problem with the firewall and also reset the winsock. Help?

There are two things to check.
*1
Network Proxy
Type '''about:preferences'''<Enter> in the address bar.
Select '''Advanced > Network.'''
Look for '''Configure How Firefox Connects''' and press the '''Settings''' button.
Check the settings.
*2
Some problems occurs when your Internet security program was set
to trust the previous version of Firefox, but no longer recognizes your
updated version as trusted. Now how to fix the problem: To allow
Firefox to connect to the Internet again;
* Make sure your Internet security software is up-to-date (i.e. you are running the latest version).
* Remove Firefox from your program's list of trusted or recognized programs. For detailed instructions, see
'''[https://support.mozilla.org/en-US/kb/configure-firewalls-so-firefox-can-access-internet Configure firewalls so that Firefox can access the Internet.]''' {web link}

I updated to Firefox 4 and now I can no longer use my track pad's capability to pinch and open /close/ and resize . Why not? It still works just fine in all other browsers.s.

Nothing more to add

Firefox 3.6.4 and 3.6.6 use a process called, "plugin-container.exe" which was using up most of my CPU when I opened up multiple tabs that contained Adobe Flash files, and caused Firefox to lock up.
My solution was to use Firefox 3.5.10 which you can get from the Mozilla website at [http://www.mozilla.com/en-US/firefox/all-older.html]
I am using Adobe Flash 10.1.53.64 without any problem in this version of Firefox. Check the release notes, I believe it contains all the latest security fixes in "Firefox 3.6.4".
Hopefully, they will fix Firefox 3.6 in the next version (e.g. Firefox 3.6.7), until then you should probably use "Firefox 3.5.10".

Why can't I attach a file to an email when using Firefox 6.0.1? Works fine if using Explorer

Using Firefox 6.0.1 browser and web mail service
Compose email
Click Add Attachment
Select file to be attached
Click Open File or double click file name
File does not attach
I do not have this problem when I use Explorer as the browser
I do not have this problem with Firefox 3

''FredMcD [[#answer-718738|said]]''
<blockquote>
''ajfollack [[#answer-718681|said]]''
<blockquote>
Disabling the adobe plugin . . . . did not resolve issue
</blockquote>
DO NOT disable old program. REMOVE them.
Many site issues can be caused by corrupt cookies or cache.
* Clear the Cache and
* Remove Cookies<br> '''''Warning ! ! '' This will log you out of sites you're logged in to.'''
Type '''about:preferences'''<Enter> in the address bar.
* '''Cookies;''' Select '''Privacy.''' Under '''History,''' select Firefox will '''Use Custom Settings.''' Press the button on the right side called '''Show Cookies.''' Use the search bar to look for the site. Note; There may be more than one entry. Remove '''All''' of them.
* '''Cache;''' Select '''Advanced > Network.''' Across from '''Cached Web Content,''' Press '''Clear Now.'''
If there is still a problem,
'''[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#advanced'''<Enter> in the address bar.
Under '''Advanced,''' Select '''General.'''
Look for and turn off '''Use Hardware Acceleration'''.
Poke around safe web sites. Are there any problems?
Then restart.
</blockquote>
I uninstalled Adobe reader, then did the rest of your suggestions but the problem remains. It is only with 3 emails that get resent daily with slight changes to the text. It is like most of the text has been removed from the email.
Thanks for the suggestions and advice

Hi, earlier I was using firefox 17 and it was working fine. Later when i upgraded to firefox 25 it became extremely slow, taking indefinite time to load a page

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It is possible that your security software (firewall, anti-virus) 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
*https://support.mozilla.org/kb/fix-problems-connecting-websites-after-updating
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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
If the new profile works then you can transfer some files from an existing profile to the new profile, but be cautious not to copy corrupted files to avoid carrying over the problem.
*http://kb.mozillazine.org/Transferring_data_to_a_new_profile_-_Firefox

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The setup:
DSL Modem/Router
Mac Running 10.4.4 connected to router directly, via ethernet cable
Mac Running 10.2.8 connected to router wirelessly, via ethernet bridge
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The Mac connected by radio works perfectly with web browsers and with Apple software update, but it can't connect to the AIM server and it can't connect to the GMail POP server. It can connect to those servers via dial-up however.
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