Hi, I am using Squid 2.7 Stable on Ubuntu 10.10 x64 Files like mp3 which have a refresh_pattern defined, and downloaded within the browser download manager is cached, but if I download the file with Internet Download Manager 6.05, the file is not cached. Note that IDM by default uses 8 connections to download a single file. Again, if I reduce the default connection number to 1, and try to download again with IDM, then the file is cached instantly. Most users in our network have IDM as their primary download manager, and if we can't cache objects downloaded with IDM, then :(((((((((((((((( Any help or ideas are welcomed. Regards, Saiful