mirror corruption, or non-backward compatible library change?

[L A Walsh]

Connected to kernel.org as I normally do, but got this:

Internal Error: gcrypt library error 1 unsupported pk alg.
[OK]
Then another popup:
Mirror Error: Setup.ini signature
http://mirrors.kernel.org/sourceware/cygwin/x86_64/setup.bz2.sig from
http://mirrors.kernel.org/sourceware/cygwin/ failed to verify.
Possible corrupt mirror?  Setup.ini rejected.

----
It looks like I'm getting this popup with each package I have
installed.

Any idea what might be wrong?  Really a corrupt mirror?
Or did I miss a gcrypt library update that supports new
signatures, but that I can't get because the update that provides
this is signed with the new algorithm?

Ideas?

Thanks!