Hi all; I've been following this thread for a few days, initially pointing my efforts to getting my U1's working under OSX.

Firstly, I'll state that I'm running a VM of Win7 on OSX because I can't get the AntGen1/AnMiner repo to make on OSX. Therefore, I'm having some trouble with 2x U1 sticks under Win7.

What I'm experiencing on Win7, now that I have all drivers installed, is a rollercoaster ride of hashing.

Inserting the first U1, it hashes up to the desired speed (1.6GH/s+), and then stabilizes. Inserting the second U1, it too hashes up to the desired speed, and then stabilizes. It's stable for approximately 20 seconds. Then, the hashrate plummets slowly (down to >100MH/s) for each device. Wait another 20 seconds, and both will bounce back to the desired speed. Additionally, my HW error rate is around 7-10%, with the vast majority of the errors appears in the "plummet" phase.

I can't figure out what the heck is going on; if anyone has any advice I'd love to hear it.