Nope the cpu is not busy, I am using the latest 1.2.3 I think it was. The NIC's are 1 gigabit Dlinks and yes the response time varies from 3 to 0.2 ms. In the moment I switched to Zeroshell back so that people in the office can work, I think my problem is from the configs. I noticed when I added DHCP IP's to be added as DNS entries the speed increased a little. ???
Gabriel