Same thing happend to me,every time you see that messsage,just click stop script,that way you will now have any trouble,the browser will stop the script and everything should continue working fine.do that every time u see that message.

That's a silly solution. You mean I should expect, nearly every time I load a web page, a 1 to 2 minute delay and then after I click stop another 1 to 2 minute time delay?

1. In the Location bar, type about:config and press Enter. The about:config "This might void your warranty!" warning page may appear.
2. Click I'll be careful, I promise!, to continue to the about:config page.
3. Type gfx.downloadable_fonts.enabled in the filter on the page.
4. Double click the result, it should now say false.
5. See if Facebook freezes.

Do you also get this error in a Private Browsing mode window (tab)?

I'll try those and check back. I set Privatemode=0 in the flash config sheet according to another answer and this has eliminated the issue. But I will remove that and try both of these answers.

I used this: http://forums.adobe.com/message/4468493#TemporaryWorkaround

You can try to clear the Flash local storage and settings if the problem is with the Flash plugin.

• Windows Control Panel > Flash Player > Storage: Local Storage Settings
  • Remove a specific domain: Local Storage Settings by site
  • Remove all domains: Delete All and Delete Data

Flash Website Storage Settings panel:

• http://www.macromedia.com/support/documentation/en/flashplayer/help/settings_manager07.html

Global Storage Settings Panel:

• http://www.macromedia.com/support/documentation/en/flashplayer/help/settings_manager03.html

had already tried that, That did not work at all.

This is happening on Facebook and BBC especially. I hadn't had this problem until recently, but now it is becoming ridiculous. I like firefox, but this is making it unusable for me. I have downloaded chrome, and have started bbc searches with both almost simultaneously. Chrome found page and I was able to scroll almost immediately. Firefox hang, then eventually came up with script busy (approx 45sec). Stop script, then it found another one to hang on. I will be uninstalling firefox if solution is not found

I'm still having the script problem even after doing what you suggested. Is there anything else that I can do please? I am going crazy here!

Woka-Flocka, THANK YOU! This was helpful and clearly instructional. It so far appears to have solved the problem. Fingers crossed it stays solved. Thanx Again! -BSB

Hi its simon here,Yes you can do that,But it wrecks your Yahoo Mail,So I had to switch it back

For people finding this thread on search engines, please note that disabling the protected mode feature of the Flash Player plugin was effective for the original poster, according to this post: https://support.mozilla.org/questions/967585#answer-466402 (adding ProtectedMode=0 to the mms.cfg file).

Disabling font downloads is helpful if you have a really huge font collection but as noted by simon (boppa99) some sites now only show their icons using a downloadable font, so it's a less appealing workaround than it was last summer.