Microsoft Internet Explorer (IE) stores cookies in different files on your hard disk drive. More you browse the web, more cookies are stored on your PC. Each cookie has its own lifetime - from several seconds to several years. But IE does not remove expired cookies from your PC even they are expired and will be never used. So, your hard drive can store several hundreds or even thousands unused and useless files. You can use Expired Cookies Cleaner software to remove expired cookie files and speed up your PC and free some disk space.....(free).....