It's unbelievably tedious! The problem is that many sites set cookies with the main page ''and'' with every linked file, including all the images. The requests stack up much faster than you could possibly click. Firefox is storing your preference, but those dialogs are not closed automatically. A few years ago, I finally gave up on reviewing/setting all the cookie permissions in real time. I set Firefox to accept and keep all cookies for the duration of the current session. For sites where I want to use cookies to stay logged in, I create an exception. That part is a little easier now due to the Permissions tab in the Page Info dialog, which is accessible using either: * right-click and choose View Page Info > Permissions * Tools menu > Page Info > Permissions * click the globe or padlock in the address bar > More Information > Permissions Note that the change doesn't take effect until you clear the site's current-session-only cookies and let the server set them again. That will happen the next time you start Firefox and visit the site again, or you can hasten the process using the Security tab, "View Cookies" button to remove the session cookies, and reload the page. (Obviously you don't want to clear the session cookies if you have unsaved work pending on the site...) But enough about me. If you prefer to keep the ask-for-approval approach, you might search to see whether there are any add-ons that ease the process.