Why We’re Not Recommending “FIPS Mode” Anymore - Microsoft Security Guidance - Site Home - TechNet Blogs

Straight talk from Microsoft, but I'm not sure they have given us much we can use to convince our auditors.

More:
http://blogs.technet.com/b/secguide/archive/2014/04/07/why-we-re-not-recommending-fips-mode-anymore.aspx