Hi all, I think I'm having similar problems as Roberto on my machines (kernel 2.2.1 and tulip.c 0.90Q). TCP flow measured with netperf between two DS21143-PD (Kingston KNE-100TX) is around 70 Mb/s one way and 2 Mb/s the other way. UDP perfomance is 95 Mb/s both ways. Has anyone else detected this problem or add any luck fixing it? Best regards, -Miguel Teodoro