I wonder if I have a bad unit. I've read through this thread, and I've never seen anything better than 1.2GH/s. Different setups, always powered. Screen shot below shows bfgminer 3.5.1, but I've tried cgminer 3.7.2 and bfgminer 3.2.0. Linux and windows.
http://i.imgur.com/kqXAxOX.pngIf this is a bad unit, can I send it in for a replacement/repair?
I am having the same problem and I have also tried Linux, Windows, cgminer and bfgminer. Have you made any progress?
