Clear the cache and the cookies from sites that cause problems.

"Clear the Cache":

• Tools > Options > Advanced > Network > Offline Storage (Cache): "Clear Now"

"Remove Cookies" from sites causing problems:

• Tools > Options > Privacy > Cookies: "Show Cookies"

Cor-el, Thanks much. Your suggestions fixed my problem.

I have just clicked "I have this problem too". I tried "Clear the Cache".

In my case, my personal igoogle homepage never loads. So I have to sign in whenever I run Google, but not without having also to exit from Google's offer to help me make a homepage.

Websites remembering you and automatically log you on 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.

Make sure that you do not run Firefox in Private Browsing mode.

• https://support.mozilla.com/kb/Private+Browsing

Do not use Clear Recent History to clear the "Cookies" and the "Site Preferences"

• https://support.mozilla.com/kb/Clear+Recent+History

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

• http://kb.mozillazine.org/Cookies