The OLD advice for this problem, listed below, is NOT working. The web addresses just DON'T come off: 1) Click the arrow that's located on the far right side of the Firefox address bar. A list of URLs will drop down. 2) Place your cursor over the URL you wish to manually delete. 3) Hold down the "Shift" key on your keyboard. Then, press the "Delete" key. The highlighted URL will be deleted. Or I've been advised to hold down the "Control" key. Neither works. There must some new, updated instructions on how to delete unwanted web addresses from the drop-down list. Anybody???