Dear All, I wonder whether anyone can help with a problem I seem to be having using Squid 2.4.STABLE2 in accelerator mode which is passing the requests via a redirector script to two Apache 1.3.33 servers for which I want to use Host Headers as I no longer have the option of using IP based hosts. The Apache servers are set up with the appropriate NameVirtualHost,VirtualHost,Servername and DocumentRoot directives so they can use name virtual hosts and Squid is configured with redirect_rewrites_host_header off and httpd_accel_uses_host_header on. What I get though is fairly random results as to whether the correct sites are delivered based on host name. I am using HTTP/1.1 when I am requesting these hostnames. It seems like Squid is caching the wrong sites as if I force it to refresh the site by adding a "?something" at the end of the URLs I do get the correct sites. Does anyone have any ideas, I have looked through the lists but cannot find anything specifically that helps. Thanks in advance, Nick