Not sure if this is hardware or software but one of my NewPacs has just zombied and it seems to have acquired the serial number of the one above?

6: GSH 10036077: BM1387:02+ 350.00MHz T:350 P:350 (107:54) | 96.2% WU: 97% | 74.45G / 77.54Gh/s WU:1083.3/m
0: GSH 10036077: BM1387:02+ 203.12MHz T:350 P:350 (176:93) | 86.1% WU:100% | ZOMBIE
If this is hardware related can it please be moved to the hardware thread.
If not... any suggestions please.
This is the solo.ckpool thread, please move your question to the dedicated hardware thread here: