hey,

I have an antminer which is running anormaly slow.
In example with bfgminer known as AMU0 (5s avg/all time avg/effective avg):

AMU 0:       |  2.08/ 2.07/ 0.07Gh/s | A: 4 R:0+0(none) HW:0/none
AMU 1:       |  1.98/ 1.97/ 1.47Gh/s | A:50 R:0+0(none) HW:0/none

Another try:
 AMU 0:       |  2.10/ 2.07/ 0.10Gh/s | A:  0 R:0+0(none) HW:0/none
 AMU 1:       |  1.98/ 1.99/ 1.45Gh/s | A: 13 R:0+0(none) HW:0/none
 AMU 2:       |  1.98/ 1.98/ 1.48Gh/s | A: 10 R:0+0(none) HW:0/none

This antminer has been tested with different hubs (dlink, 49-ports...), alone, but it never reached more than 0,1Gh/s.

The 21 other units are working very well, so I guess the item is faulty 
Screws are tight... and it's not getting hot at all ... Any idea?