I know that KNC team is working hard to deliver the best product, but confronting the facts, I must say I am a little disappointed.

The Jupiter miner I received was running at 280 Ghash/s on firmware v0.95. That became a 0 Ghash/s miner after upgrading firmware to 0.97... Firmware revision v0.98 brought my miner back to life, but I now have poor performance.

Back in late september when I was considering asking for a refund, I was lead to think that I was going to receive on the 15th of October a 550Ghash/s miner with less than 1W/(Ghash/s) electric consumption.

What I got on the 29th of October was a 400 ghash/s Jupiter, consuming 535 Watts (1.35W/(Gh/s)).

I have ~15BTC of lost income due to late delivery and since delivery 25% lost of income per day (@todays diff~0.18BTC) due to lack of performance
And with this you add bad life time due to poor efficiency (Ghash/J).... lets say I too am a little screwed up.

I emailed them on those matter, and even if they are kindly looking on my technical problems, they choose not to answer or missed the real issue...