Websites remembering you and automatically log you in is stored in a cookie.

• Create an allow cookie exception (Tools > Options > Privacy > Cookies: Exceptions) to keep such a cookie, especially for secure websites and if cookies expire when Firefox is closed.
• In Private Browsing - Use Firefox without saving history mode all cookies are session cookies that expire if that session is ended, so websites won't remember you.
• In Private Browsing - Use Firefox without saving history mode Firefox won't fill names and passwords automatically and won't offer to store new passwords.

• Do not use Delete browsing, search and download history on Firefox to clear the "Cookies" and the "Site Preferences"

Clearing "Site Preferences" clears all exceptions for cookies, images, pop-up windows, software installation, and passwords.

• http://kb.mozillazine.org/Cookies

This did not help. If I can't get this fixed very soon, I will be reverting back to Internet Explorer, and doing away with Firefox, which is a shame because I have been with you guys for years, but with the latest update, I can no longer use this browser with easy as I had before, because of the above mentioned problem.

Did you make sure that you keep cookies?

Does that happen after you close and restart Firefox?

Yes I have done everything you asked me to try, and it still doesn't work. It get's frustrating everytime I go to a site like, UPS or FED-Ex and it asks me what country I'm in "like I'm setting it up for the first time". I have gone back to using IE, since I do not have time to troubleshoot your browser. I run my business, as well as 2 websites, and I have already spent too much time on trying to fix this problem.

This is similar to my problem, try what I did: Here

Edit: Link: https://support.mozilla.com/en-US/questions/833130#answer-199445

Hovering your mouse over the link should show you the url.

Did this work for you and what will I find by clicking on HERE? I usually like to see the link.