Sorry to hear about this hassle.

Was anything in our support article useful: Warning Unresponsive script - What it means and how to fix it.

Another common cause of unresponsive script errors on Windows 7 is the protected mode feature of the Flash player plugin. That feature has security benefits, but seems to have serious compatibility issues on some systems. There is a hidden setting to disable it; I suggest trying this for a day to see whether it helps:

(A) In a new tab, type or paste about:config in the address bar and press Enter. Click the button promising to be careful.

(B) In the search box above the list, type or paste flash and pause while the list is filtered

(C) Double-click the dom.ipc.plugins.flash.disable-protected-mode preference to switch its value from false to true.

This might not take effect until all Flash has been unloaded for a few minutes, or you close Firefox.

If the above doesn't help, can you read enough of the script name/address to associate it with an add-on? Sometimes an extension that is not kept up-to-date is the source of this error, particularly if you see them on numerous sites that otherwise seem unrelated. We've definitely seen problems with Skype Click to Call.

You can review, disable, and often remove extensions on the Add-ons page. Either:

• Ctrl+Shift+a
• "3-bar" menu button (or Tools menu) > Add-ons

In the left column, click Extensions. Then you can review the list on the right, and disable nonessential extensions. Also, you can check for updates using the "gear" button above the list.

Often a link will appear above at least one disabled extension to restart Firefox. You can complete your work on the tab and click one of the links as the last step.