We have a problem right now with our Squid 2.5 Stable 10 where if IE tried to open some websites with many advertisements, eg: msnbc.com, cnn.com, IE will hang. The main problem is we just implement a intrusion firewall at our border router that blocks advertisement websites. So, when Squid can't open this advertisement link, and thus caused the client (IE) to hang. Is it possible to set some kind of timeout, so that a URL that fails to open should be returned as fail with squid within a couple seconds? I've been testing with the: persistent_request_timeout request_timeout forward_timeout connect_timeout and change them to 20 seconds, but the problem still persists. Thanks