Adrian, Hereby the HEADERS for all requests done by Windows Media Player through Squid-3STABLE1. The first sequence is with HTTP 1.1 on in IE7. The second sequence without ... ========================================== IE7 with HTTP 1.1 enabled: DOES NOT WORK!! ========================================== ==> REQUEST GET /redir/submittoc/?locale=409&geoid=b0&version=11.0.5721.5230&userlocale=413&requestid=A3E45BEA-276A-4AF3-A262- FC669CCABD06 HTTP/1.0 Accept: image/gif, image/x-xbitmap, image/jpeg, image/pjpeg, application/x-shockwave-flash, application/vnd.ms-powerpoint, applicati on/vnd.ms-excel, application/msword, application/xaml+xml, application/vnd.ms-xpsdocument, application/x-ms-xbap, application/x-ms-a pplication, */* Accept-Language: en-us UA-CPU: x86 Accept-Encoding: gzip, deflate User-Agent: Mozilla/4.0 (compatible; MSIE 7.0; Windows NT 5.1; .NET CLR 1.1.4322; .NET CLR 2.0.50727; .NET CLR 3.0.04506.30; .NET CL R 3.0.04506.648) Host: redir.metaservices.microsoft.com Cookie: MC1=GUID=fe429b6774e7e64e91a5f226aef639c8&HASH=679b&LV=200711&V=3; A=I&I=AxUFAAAAAAB7CAAAe0xmgrNDWWJgPUWuMxeHSw!!&CS=111cpm0 01Z1BL0001u10103; WT_FPC=id=212.129.180.202-23062672.29895393:lv=1199332650859:ss=1199332650859; WT_NVR_RU=0=msdn2:1=:2= Via: 1.1 X.X.X (squid/3.0.STABLE1) X-Forwarded-For: X.X.X.X Cache-Control: max-age=259200 Connection: keep-alive ==> RESPONSE HTTP/1.1 302 Found Connection: close Date: Thu, 03 Jan 2008 15:22:30 GMT Server: Microsoft-IIS/6.0 X-Powered-By: ASP.NET X-AspNet-Version: 2.0.50727 Location: http://fai.music.metaservices.microsoft.com/FAI/default.aspx?locale=409&geoid=b0&version=11.0.5721.5230&userlocale=413&req uestid=A3E45BEA-276A-4AF3-A262-FC669CCABD06 Cache-Control: private Content-Type: text/html; charset=utf-8 Content-Length: 298 ==> REQUEST GET /FAI/default.aspx?locale=409&geoid=b0&version=11.0.5721.5230&userlocale=413&requestid=A3E45BEA-276A-4AF3-A26 2-FC669CCABD06 HTTP/1.0 Accept: image/gif, image/x-xbitmap, image/jpeg, image/pjpeg, application/x-shockwave-flash, application/vnd.ms-powerpoint, applicati on/vnd.ms-excel, application/msword, application/xaml+xml, application/vnd.ms-xpsdocument, application/x-ms-xbap, application/x-ms-a pplication, */* Accept-Language: en-us UA-CPU: x86 Accept-Encoding: gzip, deflate User-Agent: Mozilla/4.0 (compatible; MSIE 7.0; Windows NT 5.1; .NET CLR 1.1.4322; .NET CLR 2.0.50727; .NET CLR 3.0.04506.30; .NET CL R 3.0.04506.648) Host: fai.music.metaservices.microsoft.com Cookie: MC1=GUID=fe429b6774e7e64e91a5f226aef639c8&HASH=679b&LV=200711&V=3; A=I&I=AxUFAAAAAAB7CAAAe0xmgrNDWWJgPUWuMxeHSw!!&CS=111cpm0 01Z1BL0001u10103; WT_FPC=id=212.129.180.202-23062672.29895393:lv=1199332650859:ss=1199332650859; WT_NVR_RU=0=msdn2:1=:2= Via: 1.1 X.X.X (squid/3.0.STABLE1) X-Forwarded-For: X.X.X.X Cache-Control: max-age=259200 Connection: keep-alive == RESPONSE HTTP/1.1 200 OK Cache-Control: private,max-age=86400 Connection: close Date: Thu, 03 Jan 2008 15:22:30 GMT Content-Type: text/html; charset=utf-8 Server: Microsoft-IIS/6.0 X-AspNet-Version: 2.0.50727 Set-Cookie: ASP.NET_SessionId=sm1cwke0eetfo3jgh2ncxn55; path=/; HttpOnly Content-Encoding: gzip Vary: Accept-Encoding Transfer-Encoding: chunked !!! SILENCE !! ===================================== IE7 with HTTP 1.1 disabled : WORKS !! ===================================== ==> REQUEST GET /redir/submittoc/?locale=409&geoid=b0&version=11.0.5721.5230&userlocale=413&requestid=B3A82577-C323-4AC4-807A-E 6BB92DBEAB6 HTTP/1.0 Accept: image/gif, image/x-xbitmap, image/jpeg, image/pjpeg, application/x-shockwave-flash, application/vnd.ms-powerpoint, applicati on/vnd.ms-excel, application/msword, application/xaml+xml, application/vnd.ms-xpsdocument, application/x-ms-xbap, application/x-ms-a pplication, */* Accept-Language: en-us UA-CPU: x86 User-Agent: Mozilla/4.0 (compatible; MSIE 7.0; Windows NT 5.1; .NET CLR 1.1.4322; .NET CLR 2.0.50727; .NET CLR 3.0.04506.30; .NET CL R 3.0.04506.648) Host: redir.metaservices.microsoft.com Cookie: MC1=GUID=fe429b6774e7e64e91a5f226aef639c8&HASH=679b&LV=200711&V=3; A=I&I=AxUFAAAAAAB7CAAAe0xmgrNDWWJgPUWuMxeHSw!!&CS=111cpm0 01Z1BL0001u10103; WT_FPC=id=212.129.180.202-23062672.29895393:lv=1199332650859:ss=1199332650859; WT_NVR_RU=0=msdn2:1=:2= Via: 1.0 x.x.x (squid/3.0.STABLE1) X-Forwarded-For: x.x.x.x Cache-Control: max-age=259200 Connection: keep-alive ==> RESPONSE HTTP/1.1 302 Found Connection: close Date: Thu, 03 Jan 2008 15:29:40 GMT Server: Microsoft-IIS/6.0 X-Powered-By: ASP.NET X-AspNet-Version: 2.0.50727 Location: http://fai.music.metaservices.microsoft.com/FAI/default.aspx?locale=409&geoid=b0&version=11.0.5721.5230&userlocale=413&req uestid=B3A82577-C323-4AC4-807A-E6BB92DBEAB6 Cache-Control: private Content-Type: text/html; charset=utf-8 Content-Length: 298 ==> REQUEST GET /FAI/default.aspx?locale=409&geoid=b0&version=11.0.5721.5230&userlocale=413&requestid=B3A82577-C323-4AC4-807A-E6BB 92DBEAB6 HTTP/1.0 Accept: image/gif, image/x-xbitmap, image/jpeg, image/pjpeg, application/x-shockwave-flash, application/vnd.ms-powerpoint, applicati on/vnd.ms-excel, application/msword, application/xaml+xml, application/vnd.ms-xpsdocument, application/x-ms-xbap, application/x-ms-a pplication, */* Accept-Language: en-us UA-CPU: x86 User-Agent: Mozilla/4.0 (compatible; MSIE 7.0; Windows NT 5.1; .NET CLR 1.1.4322; .NET CLR 2.0.50727; .NET CLR 3.0.04506.30; .NET CL R 3.0.04506.648) Cookie: MC1=GUID=fe429b6774e7e64e91a5f226aef639c8&HASH=679b&LV=200711&V=3; A=I&I=AxUFAAAAAAB7CAAAe0xmgrNDWWJgPUWuMxeHSw!!&CS=111cpm0 01Z1BL0001u10103; WT_FPC=id=212.129.180.202-23062672.29895393:lv=1199332650859:ss=1199332650859; WT_NVR_RU=0=msdn2:1=:2= Host: fai.music.metaservices.microsoft.com Via: 1.0 x.x.x (squid/3.0.STABLE1) X-Forwarded-For: x.x.x.x Cache-Control: max-age=259200 Connection: keep-alive ==> RESPONSE HTTP/1.1 200 OK Connection: close Date: Thu, 03 Jan 2008 15:29:41 GMT Server: Microsoft-IIS/6.0 X-AspNet-Version: 2.0.50727 Set-Cookie: ASP.NET_SessionId=ktgrcmmbjwkibh551i54hzyg; path=/; HttpOnly Cache-Control: private Content-Type: text/html; charset=utf-8 Content-Length: 1645 <!----------------------------------------------------------------------- // // Microsoft Windows Media Internet Services // Copyright (C) Microsoft Corporation. All rights reserved. // //----------------------------------------------------------------------> <html xmlns="http://www.w3.org/1999/xhtml"> <head><title> ... ==> REQUEST (POST) POST /FAI/AlbumMatch.aspx?locale=409&geoid=b0&version=11.0.5721.5230&userlocale=413&requestid=B3A82577-C323-4AC4-807A- E6BB92DBEAB6 HTTP/1.0 Accept: image/gif, image/x-xbitmap, image/jpeg, image/pjpeg, application/x-shockwave-flash, application/vnd.ms-powerpoint, applicati on/vnd.ms-excel, application/msword, application/xaml+xml, application/vnd.ms-xpsdocument, application/x-ms-xbap, application/x-ms-a pplication, */* Referer: http://fai.music.metaservices.microsoft.com/FAI/default.aspx?locale=409&geoid=b0&version=11.0.5721.5230&userlocale=413&requ estid=B3A82577-C323-4AC4-807A-E6BB92DBEAB6 Accept-Language: en-us Content-Type: application/x-www-form-urlencoded UA-CPU: x86 User-Agent: Mozilla/4.0 (compatible; MSIE 7.0; Windows NT 5.1; .NET CLR 1.1.4322; .NET CLR 2.0.50727; .NET CLR 3.0.04506.30; .NET CL R 3.0.04506.648) Host: fai.music.metaservices.microsoft.com Content-Length: 16375 Pragma: no-cache Cookie: MC1=GUID=fe429b6774e7e64e91a5f226aef639c8&HASH=679b&LV=200711&V=3; A=I&I=AxUFAAAAAAB7CAAAe0xmgrNDWWJgPUWuMxeHSw!!&CS=111cpm0 01Z1BL0001u10103; WT_FPC=id=212.129.180.202-23062672.29895393:lv=1199332650859:ss=1199332650859; WT_NVR_RU=0=msdn2:1=:2=; ASP.NET_Se ssionId=ktgrcmmbjwkibh551i54hzyg Via: 1.0 x.x.x (squid/3.0.STABLE1) X-Forwarded-For: x.x.x.x Cache-Control: max-age=259200 Connection: keep-alive etc etc ... The only differences I can see is that the content that is returned by MS isn't gzipped anymore and that the "Via" headers contain 1.0 instead of 1.1 ... or do you see something else? /Cheers Bert.