Well, defining the expiration date is up to the server. Debian picks a week. Ubuntu does not use it, I have started a launchpad branch last year, but um, I don'

Well, defining the expiration date is up to the server. Debian picks a week. Ubuntu does not use it, I have started a launchpad branch last year, but um, I don't know launchpad, so it might take some more years ;)