Does it have any effect if you disable all extensions (Tools > Add-ons > Extensions) ?

Start Firefox in Diagnose Firefox issues using Troubleshoot Mode to check if one of the extensions or if hardware acceleration is causing the problem (switch to the DEFAULT theme: Firefox/Tools > Add-ons > Appearance/Themes).

• Don't make any changes on the Safe mode start window.
• https://support.mozilla.org/kb/Safe+Mode

• https://support.mozilla.org/kb/Troubleshooting+extensions+and+themes

I disabled all add-ons and themes. Altough it didn't freeze immediately after launch but with small time after, it froze again.

Does it help if you disable protected mode in the Flash player?

• http://forums.adobe.com/thread/1018071?tstart=0

Thank you, it worked. However, are there any downsides of that solution?

You will have less protection against malicious Flash files.

See:

• http://blogs.adobe.com/asset/2012/06/inside-flash-player-protected-mode-for-firefox.html

Any thoughts on that? Will there be fixes for this issue?

As someone with less experience with these things I have to ask about the instructions: To disable, add the following line to your mms.cfg file - ProtectedMode = 0

Should that read as mms.cfgProtectedMode = 0 or mms.cfg ProtectedMode = 0 ?

1. Locate the file "mms.cfg" on your hard disk at specified path. If it doesn't exists then create one. Make sure you specify proper extension. 2. Add "ProtectedMode = 0" in the end of the file.

You also need Administrator permissions to be able to edit the file in that location.

so is it mms.cfgProtectedMode = 0 *or* mms.cfg ProtectedMode = 0 ?

Stupid question but I'm not that good with computers.

Why would you add "mms.cfg" in the string? It is the name of the file, not something you write inside it.

you dont change the name of the file it will still look like mms.cfg what u have to do is open the file with notepad as administrator and you will see this

AutoUpdateDisable=0
SilentAutoUpdateEnable=1

then type in the "ProtectedMode = 0" under that so it looks like this

AutoUpdateDisable=0
SilentAutoUpdateEnable=1
ProtectedMode = 0

then go file save and click save if it says access denied its because ur not running notepad as administrator

click on the windows button go to the search bar and type "notepad" right click notepad and select run as administrator then go to file, open, and type mms.cfg in the bar next to filename click open add the ProtectedMode = 0 line and save it

Thanks, that helped a lot. I suppose it's all too obvious to you smart people, but the rest of us need it in small and simple words. :)

alternately if you download the latest version of firefox that works too, i just found out! and it wasnt obvious to me either i just figured it out all these guys and their technical terms didnt help me at all either, is a step by step instructions in plain english so hard? i say no.

Worked for me

http://support.mozilla.org/en-US/kb/reset-firefox-easily-fix-most-problems

johnathan6060 > Thanks it worked for me ! I was desperate.

Here is what happened to me. I downloaded the latest flash player as of June 21. 2012. My firefox was also the latest model. I found the following: On jumble the puzzle did not print, just got a blank blue page and also had system freeze. On sites where I had listened to conference calls I could no longer connect to the calls or hear or see anything except a blank screen. I attempted to reach a site to watch the European bridge championships, and couldn't connect to the site. (You can see I am retired and have a lot of time on my hands.) I fixed the problem by using system restore and going back to June 3, to flash 11 and firefox yahoo 1.9. I am not going to apply any updates to firefox or flash until I hear that the latest editions of each are working together. Chrome worked with the latest adobe flash as far as I can tell, but I prefer firefox. Can anyone find an easy way to use the newest flash and firefox together. The protected disable mode mumbo jumbo was over my head. A place to test the fix would be at jumble . If you don't play the game, you should give it a try. .

Has this problem been solved on latest Firefox update (13.0.1)? I'd rather not risk having to go over this mess again...

http://forums.adobe.com/thread/1022066?tstart=0 explains how to remove the latest flash, worked for me at least.