However, the AntMiner U1 is still not going to work right until there is proper support written. All of those invalid nonce errors are because there is no proper support yet. About 36% of the hardware performance is being wasted.
I agree... Some genius programer are needed around here

I haven't been able to get the U1 to be working properly. I tried all the windows and MacOs tutorial I could find and the only stable solution I found is to use the hardware at a lower rate under Mac with cgminer for mac (
http://spaceman.ca/cgminer)
I hope Kerry will find a way to support the U1 in the next release of cg-miner for mac or Asteroid...