good time to you! there is a problem with package files at debian site.. for example :
in http://packages.debian.org/testing/comm/ section there are two different progs *ifmail* and *ifgate* BUT their package-URL-link points to the one location http://ftp.debian.org/debian/pool/main/i/ifmail/ifmail_2.14tx8.10.orig.tar.gz and i could not find any pointing to *ifgate* package.. ..and there are many so false-links ...i mean several "the-same-family" packages have this trouble locators.. big thanks { !!! } from Russian *xoid and.. good luck to you all