Every site going to site which uses PeerConnection() script makes my Firefox lose Internet connection. After visiting that kind of site if I try to go another site it shows it loads but nothing happens. After I close Firefox I can't open new window because it's "running" background. I have to shut it down from task manager. I have this problem only with one computer (Acer Predator G3610, OS: Windows 8) with Firefox 19, Aurora 20a1 and Nighly 22.0a1 (2013-02-20). With my tablet (Dell Inspiron Duo, OS: Windows 8) it works fine?
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Firefox on your tablet is a different platform which may not have these types of issues.
Which browser are you having issue with? You have more than 1 Mozilla browser. Does this happen on all browsers? Have you tried a clean reinstall to see if this helps or at least tried safe mode to check addons?
Try the Firefox Safe Mode to see how it works there. The Safe Mode is a troubleshooting mode, which disables most add-ons.
(If you're not using it, switch to the Default theme.)
Don't select anything right now, just use "'Start in Safe Mode" To exit the Firefox Safe Mode, just close Firefox and wait a few seconds before using the Firefox shortcut (without the Shift key) to open it again. If it is good in the Firefox Safe Mode, your problem is probably caused by an extension, and you need to figure out which one.
Please follow the Troubleshoot extensions, themes and hardware acceleration issues to solve common Firefox problems article for that.
When you figure out what's causing your issues, please let us know. It might help other users who have the same problem.
Certain Firefox problems can be solved by performing a Clean reinstall. This means you remove Firefox and any leftover program files and then reinstall Firefox. Please follow these steps one by one:
IMPORTANT: On Windows, the uninstaller has the option to remove your personal data and settings. Make sure that you do not check this option; otherwise all of your bookmarks, passwords, extensions, user customizations and other Firefox user profile data will be removed from your computer.
After uninstalling Firefox on Windows, delete the "Mozilla Firefox" program folder, located by default in one of these locations:
Now, go ahead and reinstall Firefox:
Please report back to see if this helped you!
feer56: Safe mode didn't work either reinstalling Firefox. I have this problem with every Mozilla browser(Firefox, Aurora and Nigthly).
cor-el: Offline mode didn't help. :(
Peer connection worked with this computer two weeks ago, but suddenly it stopped working.
There may have been code changes that are causing this.
Try to ask advice at the MozillaZine Firefox Builds forum if this is about the current Firefox 22.0a1 Nightly build.