You can look at these prefs on the about:config page. http://kb.mozillazine.org/browser.history_expire_days (180) (also affects saved form data) http://kb.mozillazine.org/browser.history_expire_days_min (90)

To open the about:config page, type about:config in the location (address) bar and press the Enter key, just like you type the url of a website to open a website. If you see a warning then you can confirm that you want to access that page.

HellO

I checked about:config and found that

browser.history_expire_days_min

was set to 3, I changed it to 90

There was not change in the problem.

I also have an entry in about config that says:

browser.history_expire_days.mirror;180

Any other thoughts?

You can check the pref layout.css.visited_links_enabled and make sure that it is set to true.

You can also try "Reset all user preferences to Firefox defaults" on the Safe mode start window - See http://kb.mozillazine.org/Resetting_preferences

Thank you!!

The layout.css.visited_links_enabled was set to false, I have no idea how that happened.

Do you have any thoughts?

I thanks you again.

Thank you!!

The layout.css.visited_links_enabled was set to false, I have no idea how that happened.

Do you have any thoughts?

I thank you again.

You're welcome.

Maybe one of the extensions (Tools > Add-ons > Extensions) has done that, who knows.

Now that I think about it the Targeted Advertising Cookie Opt-Out (TACO) ad on updated itself to Abine, changed a few things, and it was so bad that I uninstalled. Then I read some reviews of the updates and saw other people complaining about it. That could have been the culprit as it may have changed the settings in about:cofig and not changed them back when uninstalled.

If this happens to anyone else see if you have installed the updated TACO to the ABINE update which I found to be awful.

Thanks again

You're welcome.

Thanks for the remark about the TACO/Abine extension.