Re: ANTMINER S5: 1155GH(+OverClock Potential), In Stock $0.25/GH & 0.51W/GH

I don't see anything to do with bitmain, maybe because their ddos protection kicked in and is working?

http://coinfire.io/2015/03/12/bitmain-fights-back-against-ddos-group/
tl;dr: The group laying claim to the DDoS also specifically referenced a DDoS against another site, Bitalo.com . The bounty for finding the DDoS'ers against Bitalo.com is now up to 110BTC, with 10BTC coming from Bitmain; https://bitcointalk.org/index.php?topic=845595.msg10757155#msg10757155