Hi, It seems that squid never caches the URL with parameters. For example, every time a browser accesses http://www.naver.com/css/www.css?20080722, a cache miss occurs in squid. However, the server response header indicates that this CSS can be cached. Date: Tue, 22 Jul 2008 04:13:57 GMT Server: Apache Last-Modified: Tue, 22 Jul 2008 01:36:35 GMT Content-Length: 39989 Cache-Control: max-age=31536000 Expires: Wed, 22 Jul 2009 04:13:57 GMT Connection: close Content-Type: text/css X-Pad: avoid browser bug Firefox seems to cache this properly. How can I make squid to cache it? Regards, Kwang Yul Seo