Mah... This is a great problem!! I have seen that this problem or high traffic is verified from 1AM and 10AM when only 3 Pc are active: 3 server & Astaro ( I have spent 1.9Gb in 10h!!!!!!!!! This is a great Problem ). Then the 3 server are clean and astaro? Boh. Then I restarted Astaro and I have the normal traffic (only 4-12Mb in 1 day)...