I'm getting half the hashrate issue with cgminer 3.3.1 on Windows (downloaded from the official place earlier this evening). Maybe it's just a cgminer issue rather than your build?
Just so I understand, are you seeing half the hashrate reported by your pool, but full speed reported by your miner? And what mining hardware are you using if you don't mind the question?
Correct.
Hardware is: AMD FX8320@4.2GHz, 8GB DDR3-1600 RAM, Asus SABERTOOTH 990FX, Windows 7 x64. Erupter is plugged in to a USB3 port, which on this board runs off an ASMedia chip.
Mining all night on BTCGuild sees 91MH/s, cgminer reports 333MH/s.
I've not had a chance to fire up my Hackintosh to try Asteroid.