Signed SHA*SUMs did briefly appear on the main and
mirror download sites for the installation ISOs.

However, once the Live ISOs were uploaded, its
(unsigned) SHA*SUMs were merged with the install
ISOs' SHA*SUMs, and replaced with a single UNsigned
file.

I did retrieve a copy of the signed SHA256SUM file
for the install ISOs before it was replaced, and include
it below.  The sha256sum hashes match the hashes
that are in the replacement unsigned files, and the
digital signature on the signed file included below did
verify.  (My mailer and/or this mailing list may mangle
the below file - there should be NO line breaks between
the end of the sha256sum, which is followed my two
spaces, and then the ISO file name.)

   David.

-----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA1

13dc08249d0c1e7885a9f304e6ae510737112bcf593e875a71b81feff1fd37a1
SL-62-x86_64-2012-02-06-Everything-DVD1.iso
5a039a53d8cba4b972c720ba58865b47656d6c1aa80b44b83aeb046983df92f0
SL-62-x86_64-2012-02-06-Everything-DVD2.iso
d41c280f46c6239619384170df74639c19813a4a86f011fa6f15e546e8874279
SL-62-x86_64-2012-02-06-boot.iso
48b6af8d71c272591cea37c99e7c67d310b352ef00a5d4ac2b2563fbb90a2f9b
SL-62-x86_64-2012-02-06-Install-DVD.iso
-----BEGIN PGP SIGNATURE-----
Version: GnuPG v2.0.14 (GNU/Linux)

iEYEARECAAYFAk8xQx8ACgkQsLQYPxkqfX1e8QCeMsza0Udokn050GFaMOhnUT9x
DlYAn2ny/nM05iA8EDPhxEOHEHkwu2uo
=ImgV
-----END PGP SIGNATURE-----