Sorry, I don't know if this is the right group for this kind of message. I've discovered that serveral identical packages in stable and unstable does have different size/md5sum listed in the corresponding "Packages.gz" files. I.e. "perspic-texts_1.4.6.deb" in "binary-all/misc" on a debian mirror are separate files, have the same size (14475Kb) but different timestamps (stable Apr 3/unstable Feb 5). In the corresponding "Packages.gz" only "stable" matches (see below).
Package.gz version "stable": --------------------------------- Package: perspic-texts Version: 1.4-6 [...] Filename: dists/stable/main/binary-powerpc/misc/perspic-texts_1.4-6.deb Size: 14823392 MD5sum: f623ab81724bc88f3614c2c9cef769e3 [...] Package.gz version "unstable" ----------------------------------- Package: perspic-texts Version: 1.4-6 [...] Filename: dists/unstable/main/binary-powerpc/misc/perspic-texts_1.4-6.deb Size: 14823398 MD5sum: 2c4aca0088904122a964477012259f30 [...] The following packages have the same problem: main/binary-all/devel/scalapack-test-common_1.6-13.deb size mismatch main/binary-all/misc/perspic-texts_1.4-6.deb size mismatch main/binary-i386/graphics/terraform_0.5.2-1.deb size mismatch main/binary-i386/misc/perspic_1.4-6.deb size mismatch main/binary-powerpc/admin/psmisc_19-2.deb size mismatch O. Wyss