"Remember Me" for automatic website logins when you return to the website is usually done with a Cookie the website set in Firefox.

Try clearing your Cookies for the affected websites. Tools > Options -> Privacy - Cookies = Show Cookies button Enter the domain in the Search bar at the top and all the Cookies for that URL will appear. Unless you can figure out which Cookie is for "remember me", you'll need to delete them all.

Hold the {Ctrl} key while you click on each Cookie in the small window. When that list is all highlighted, click the Remove Cookie button in the lower left. When you are done click Close.

If that problem persists, you might need to delete the __cookies.sqlite__ file in your Profile folder. http://support.mozilla.com/en-us/kb/Profiles#How_to_find_your_profile You might need to unhide your "Hidden files and folders" thru Folder Options in the Windows Control Panel

• Make sure that you not run Firefox in Private Browsing - Use Firefox without saving history mode
• Websites remembering you and automatically log you in is stored in a cookie.
• You must allow that cookie (Tools > Options > Privacy > Cookies: Exceptions), especially for secure websites and if you let cookies expire when Firefox closes
• Make sure that you do not use Delete browsing, search and download history on Firefox to clear the "Cookies" and the "Site Preferences"

See also:

• Always start Firefox in a private browsing session