Hash sum mismatch on Package files

[Andrey Galkin <andvgal@gmail.com>]

FYI,

I have noticed something strange on many machines using different
mirrors. It looks like at least i386 and amd64 Package files are
broken for non-free.

Any comments?

A list of similar errors:
W: Failed to fetch
http://ftp.debian.org/debian/dists/jessie-backports/non-free/binary-amd64/Packages
 Hash Sum mismatch
W: Failed to fetch
http://ftp.ee.debian.org/debian/dists/jessie-backports/non-free/binary-amd64/Packages
 Hash Sum mismatch
W: Failed to fetch
http://ftp.se.debian.org/debian/dists/jessie-backports/non-free/binary-amd64/Packages
 Hash Sum mismatch
W: Failed to fetch
http://httpredir.debian.org/debian/dists/jessie-backports/non-free/binary-amd64/PackagesIndex:
Hash Sum mismatch
W: Failed to fetch
http://httpredir.debian.org/debian/dists/jessie-backports/non-free/binary-i386/PackagesIndex:
Hash Sum mismatch


Thanks,
Andrey