Hi, I am using squid cache 2.5 on FC3 Linux and would like to reduce the Internet traffic for windowsupdate. I found that there were many TCP_MISS for windowsupdate (as shown below) although I set a large value for maximum object size (e.g. 600MB) and I was sure that a previous user had got the update before. 1151634455.935 9740 10.144.11.88 TCP_MISS/200 833603 GET http://www.download.windowsupdate.com/msdownload/update/v3-19990518/CabPool/q329414_mdacall_x86_6455F9E15D1FD876A354AC196BCE848B4EA39180.exe? - DIRECT/69.28.145.34 application/octet-stream 1151634456.756 761 10.144.11.88 TCP_MISS/200 337 GET http://v3stats.windowsupdate.com/wutrack.bin? - DIRECT/207.46.197.117 application/octet-stream 1151634456.965 208 10.144.11.88 TCP_MISS/200 714 GET http://windowsupdate.microsoft.com/CRCCif/6271_08A08E5B8A56FDC63B1EA85C7D30754FC5857DF3.cif? - DIRECT/207.46.18.94 application/octet-stream Is there any way to cache the winodwsupdate so effectively to minimize the Internet traffic? Thanks a lot. John Mok