The first option allows you to set a number for how many copies of each package are retained. In other words, if you have downloaded 25 versions of firefox over the life of your install and you set this number to "3", only the most recent 3 versions will be retained. Unless you are very short on disk space, it is recommended to set this to at least 2.
Cookies help us deliver our services. By using our services, you agree to our use of cookies.