Hi, I am playing around with pr and linux. Now I notice a strange behaviour. With a small machine load I cant receive any packet, hm, perhaps 5 packets/30 mins. But if load gets higher (kernel compile) all works fine. If have tested this a few times. Is there a timingproblem or a trick that I have missed? Kernelversion is 2.2.12. Thank you Michael, DG4MW