Some additional information: The site works without freezing in all other browsers I have -- Explorer, Edge, and Chrome.

Is this with all websites/pages, some, a few?

I have several versions of Firefox and had no problem.

Clearing cookies, cache, and Safe Mode are the normal things to check.

https://support.mozilla.org/kb/Firefox+is+already+running+but+is+not+responding

https://support.mozilla.org/en-US/kb/firefox-slow-how-make-it-faster

https://support.mozilla.org/en-US/kb/firefox-uses-too-many-cpu-resources-how-fix

https://support.mozilla.org/en-US/kb/firefox-uses-too-much-memory-ram

https://support.mozilla.org/en-US/kb/firefox-hangs-or-not-responding

Thanks, Fred. I really appreciate your taking the time to offer some solutions.

To answer your first question, it does not happen with all sites. It happens only with the one site that I mentioned.

And, since it doesn't happen with other browsers, there is something about the latest update to Firefox that made it so this particular site now freezes up Firefox.

The site loaded perfectly well for years with Firefox, but not anymore. I can have many tabs open in Firefox, but once I open a tab with the Adam4Adam.com website, not only that tab freezes, but all the other tabs that I have open freeze up too.

Once again, thanks for your reply. When I get a chance, I will look at each of your suggested solutions, and write back to let you know if they helped.

Delete browsing, search and download history on Firefox {web link}

Remove a single website from your history {web link}

Open the History Manager <Control> (Mac=<Command>) <Shift> H. In the search bar, enter the name of the site. Right-click on one of the listings and select Forget About This Site. This should remove all information, including any site settings And Passwords.

Thanks again, Fred McD. I cleared the history for the particular website.

Unfortunately, that did not work.

However, I discovered that the problem was that for this particular website, when I allowed the website to track my location, it would freeze up the browser. When I blocked the website from knowing my location then the problem resolved itself.

I followed the instructions located here to undo the location permissionsT granted to a site: https://support.mozilla.org/en-US/kb/does-firefox-share-my-location-websites#w_how-do-i-undo-a-permission-granted-to-a-site

I appreciate your responses because they led me to dig deeper and try allowing and not allowing various permissions including location permissions. Troubleshooting the location permission for this particular website did the trick.

Thanks again for helping me troubleshoot.

I

Odd. Very odd. That was very good work. Well Done.