http://www.cyberwarzone.com/did-nsa-put-secret-backdoor-new-encryption-standard

"But one of those generators -- the one based on elliptic curves -- is not like the others. Called Dual_EC_DRBG, not only is it a mouthful to say, it's also three orders of magnitude slower than its peers. It's in the standard only because it's been championed by the NSA, which first proposed it years ago in a related standardization project at the American National Standards Institute."

Anything to worry about?