Hello,

Try Firefox Safe Mode to see if the problem goes away. Safe Mode is a troubleshooting mode, which disables most add-ons.

(If you're not using it, switch to the Default theme.)

• You can open Firefox 4.0+ in Safe Mode by holding the Shift key when you open the Firefox desktop or Start menu shortcut.
• Or open the Help menu and click on the Restart with Add-ons Disabled... menu item while Firefox is running.

Once you get the pop-up, just select "'Start in Safe Mode"

If the issue is not present in 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.

To exit the Firefox Safe Mode, just close Firefox and wait a few seconds before opening Firefox for normal use again.

When you figure out what's causing your issues, please let us know. It might help other users who have the same problem.

Thank you.

Since you already did a reset, you've cleared many of the reasons that Firefox might have problems on a site. However, I notice you still have a lot of plugins. Could you try two experiments?

(1) Disable all plugins except latest Adobe Acrobat/PDF plugin and Shockwave Flash. If one of the other ones is needed by a particular site, Firefox should alert you. You can make the change here:

orange Firefox button (or Tools menu) > Add-ons > Plugins category

(2) Disable JavaScript. This is just a test for the one site, since the web can become unusable without JavaScript.

orange Firefox button (or Tools menu) > Options > Content > uncheck Enable JavaScript

Then OK the change and reload the page. Do you get any content?

Hi.

I was just going through all the troubleshooting steps above with no luck. I see that disabling plugins is not permanent - restarting the browser enables all the plugins again - couldn't see how to remove plugins...

OK I disabled all plugins except the 2 (adobe flash and shockwave) then disabled javascript. It works!!!

I re-enabled Javascript and the page stops. Looks like that site is buggy.

Thanks very much for all your help.

I am going to enable my plugins now and test again.

Something funny - without reloading the browser - I went into add-ons/plugins and they were all enabled again. With Javascript still disabled that site works.

If you want me to check anything else (later) I will.

Thanks again!!!!

A refinement of the strategy might involve using the NoScript extension. Normally, you use NoScript to insulate you from JavaScript until you determine that a site -- and its many linked-in script sources -- are trustworthy, gradually amassing a "whitelist" as you use the web. But you could use it just for selective applications if that's too intense.

What I have in mind is a test where you keep it idle (allow scripts globally while visiting other sites), but turn it on before visiting that site. The main address and all the related third party servers will appear on the menu for whitelisting or keeping blocked. You can selectively enable/disable different script sources to try to isolate the problem.

Thanks again for your help

You can remove all data stored in Firefox from a specific domain via "Forget About This Site" in the right-click context menu of an history entry (History > Show All History or View > Sidebar > History) or via the about:permissions page.

Using "Forget About This Site" will remove all data stored in Firefox from that domain like bookmarks, cookies, passwords, cache, history, and exceptions, so be cautious and if you have a password or other data from that domain that you do not want to lose then make a note of those passwords and bookmarks.

You can't recover from this 'forget' unless you have a backup of the affected files.

It doesn't have any lasting effect, so if you revisit such a 'forgotten' website then data from that website will be saved once again.