Hello, I already sent this question to the (old) list some half an year ago, but noone seemed to have an idea. Hopefully, there will be more luck this time. We have a strange problem and the most annoying part is that it shows up pretty randomly. The boards used are ENP-2505. Sometimes, when we start some aces, the card does receive packets, the ace does send a response, but its response doesn't get to the wire (it happens even with the WWBump example). The RmSendPacket() doesn't report any error and everything seems to be working, except this little thing - no packet is received from the card. It seems that the packets get lost somewhere in the DL_SASink[] macro, but I don't really know how to check it or debug it. Restarting the aces usually helps, but still, this happens once in 4 or 5 times, which makes it VERY annoying when developing something (especially if it involves more machines at the same time, like in our case). Has anyone else encountered this problem and, perhaps, found a solution to it? Best regards, Matija -- Matija Puzar Department of Informatics, University of Oslo Postbox 1080 Blindern, N-0316 Oslo tel: +47 22 85 27 87, fax: +47 22 85 24 01