I will try that, I had them daisy chained because all the ports are full on the hubs and was using the other usb for keyboard and mouse. I now just ssh in so I dont need the port. Didnt cross my mind because cpuminer was working flawlessly.changing the ports didn't help. Whats really wierd is if I let it sit long enough, they all enventually submit shares, except the power usage fluctuates alot, 140 watts up to 220, and back down. Almost like the Pi just isnt fast enough to run 28 in cgminer. Maybe the code is less cpu efficient than cpuminer. I get the feeling it cant keep up and miners are going idle and then back online, which would explain the power fluctuations.