Random Kryptonotes
Two separate blog posts to be aware of for anyone interested in cryptography (or Krypto Krap as a former colleague would say).
PKI Team blog: Planned August release on Windows Update will block RSA keys weaker than 1024 bits:
http://blogs.technet.com/b/pki/archive/2012/06/12/rsa-keys-under-1024-bits-are-blocked.aspx
MSRC blog: detailed technical breakdown on the Flame malware, read the external links at the end for answers to whether MD5 should be used as a signing algorithm today.