Hi All, I followed the tip from squid wiki to run multiple squid instances on the same in order to use multiple cores (I'm running squid on an eight-core processor). Following: http://wiki.squid-cache.org/MultipleInstances I was able to get the 2nd instance of squid up and running. And on the first squid, I directed the traffic from windowsupdate.com and other cache-busy domains to the second squid. I used cache_peer_access and it worked fine. However, the http_port on both squid instances use TProxy, and it didn't work. It only worked if I used no-tproxy no cache_peer. But if I use no-tproxy, the second squid instance doesn't go out with the outgoing address of the client...which is a problem. Is there a way to get the best of both worlds? :) Thank you in advance, Felipe Damasio