Hi,
I am using Squid3 nightly built 20071026 running on Ubuntu 6.06 LTS with 
the compilation options :-
./configure --with-pthreads --enable-icap-client
I tried both (i) the configurations with default option, or (ii) 
icap-enabled options, the Windows client failed to get WindowsUpdate 
(see the following log).
### begin of access.log ###
1193446864.109     61 192.168.16.50 TCP_IMS_HIT/304 287 GET 
http://windowsupdate.microsoft.com/ - NONE/- text/html
1193446864.209     62 192.168.16.50 TCP_IMS_HIT/304 302 GET 
http://windowsupdate.microsoft.com/redirect.js - NONE/- 
application/x-javascript
1193446864.879    657 192.168.16.50 TCP_MISS/200 524 POST 
http://windowsupdate.microsoft.com/redirect.asp? - DIRECT/207.46.18.94 
text/html
1193446865.539    639 192.168.16.50 TCP_MISS/200 507 POST 
http://windowsupdate.microsoft.com/redirect.asp? - DIRECT/207.46.18.94 
text/html
1193446866.339    779 192.168.16.50 TCP_MISS/301 612 GET 
http://www.update.microsoft.com/windowsupdate - DIRECT/65.55.200.189 
text/html
1193446866.829    488 192.168.16.50 TCP_MISS/302 602 GET 
http://www.update.microsoft.com/windowsupdate/ - NONE/- text/html
1193446867.359    527 192.168.16.50 TCP_MISS/200 2448 GET 
http://www.update.microsoft.com/windowsupdate/v6/default.aspx - NONE/- 
text/html
1193446868.212    793 192.168.16.50 TCP_MISS/200 15798 GET 
http://www.update.microsoft.com/windowsupdate/v6/default.aspx? - NONE/- 
text/html
1193446868.719    487 192.168.16.50 TCP_MISS/200 2723 GET 
http://www.update.microsoft.com/windowsupdate/v6/shared/js/tgar.js? - 
NONE/- application/x-javascript
1193446869.231    497 192.168.16.50 TCP_MISS/200 20024 GET 
http://www.update.microsoft.com/windowsupdate/v6/shared/js/redirect.js? 
- NONE/- application/x-javascript
1193446869.869   1727 192.168.16.50 TCP_MISS/302 772 GET 
http://en-us.fxfeeds.mozilla.com/en-US/firefox/headlines.xml - 
DIRECT/63.245.209.21 text/html
1193446870.032    766 192.168.16.50 TCP_MISS/200 524 POST 
http://www.update.microsoft.com/windowsupdate/v6/redirect.asp? - 
DIRECT/65.55.200.189 text/html
1193446870.519    647 192.168.16.50 TCP_MISS/302 814 GET 
http://fxfeeds.mozilla.com/firefox/headlines.xml - DIRECT/63.245.209.21 
text/html
1193446870.889    831 192.168.16.50 TCP_MISS/200 463 POST 
http://www.update.microsoft.com/windowsupdate/v6/redirect.asp? - 
DIRECT/65.55.200.189 text/html
1193446872.296   1405 192.168.16.50 TCP_MISS/200 33154 GET 
http://www.update.microsoft.com/windowsupdate/v6/shared/js/commontop.js? 
- NONE/- application/x-javascript
1193446872.991   2460 192.168.16.50 TCP_MISS/200 20366 GET 
http://newsrss.bbc.co.uk/rss/newsonline_world_edition/front_page/rss.xml 
- DIRECT/212.58.226.73 application/xml
1193446873.160    847 192.168.16.50 TCP_MISS/200 51183 GET 
http://www.update.microsoft.com/windowsupdate/v6/shared/js/webcomtop.js? 
- NONE/- application/x-javascript
1193446873.629    455 192.168.16.50 TCP_MISS/200 3314 GET 
http://www.update.microsoft.com/windowsupdate/v6/shared/js/spupdateids.js? 
- NONE/- application/x-javascript
1193446874.340    701 192.168.16.50 TCP_MISS/200 50173 GET 
http://www.update.microsoft.com/windowsupdate/v6/shared/js/resultslist.js? 
- NONE/- application/x-javascript
1193446874.839    459 192.168.16.50 TCP_MISS/200 7134 GET 
http://www.update.microsoft.com/windowsupdate/v6/mstoolbar.aspx? - 
NONE/- text/html
1193446875.397   1017 192.168.16.50 TCP_MISS/200 6235 GET 
http://www.update.microsoft.com/windowsupdate/v6/toc.aspx? - 
DIRECT/65.55.200.189 text/html
1193446875.419    571 192.168.16.50 TCP_MISS/200 3109 GET 
http://www.update.microsoft.com/library/toolbar/3.0/css.aspx? - NONE/- 
text/css
1193446875.473   1083 192.168.16.50 TCP_MISS/200 3659 GET 
http://www.update.microsoft.com/windowsupdate/v6/splash.aspx? - 
DIRECT/65.55.200.189 text/html
1193446875.505     43 192.168.16.50 TCP_IMS_HIT/304 287 GET 
http://www.update.microsoft.com/library/toolbar/3.0/images/banners/windows_masthead_ltr.gif 
- NONE/- image/gif
1193446875.529   1124 192.168.16.50 TCP_MISS/200 5421 GET 
http://www.update.microsoft.com/windowsupdate/v6/footer.aspx? - 
DIRECT/65.55.200.189 text/html
1193446875.909    497 192.168.16.50 TCP_MISS/200 2723 GET 
http://www.update.microsoft.com/windowsupdate/v6/shared/js/tgar.js? - 
NONE/- application/x-javascript
1193446875.999    508 192.168.16.50 TCP_MISS/200 2723 GET 
http://www.update.microsoft.com/windowsupdate/v6/shared/js/tgar.js? - 
NONE/- application/x-javascript
1193446876.069    533 192.168.16.50 TCP_MISS/200 3109 GET 
http://www.update.microsoft.com/library/toolbar/3.0/css.aspx? - NONE/- 
text/css
1193446876.773    756 192.168.16.50 TCP_MISS/200 19823 GET 
http://www.update.microsoft.com/windowsupdate/v6/shared/js/content.js? - 
NONE/- application/x-javascript
1193446876.825    907 192.168.16.50 TCP_MISS/200 10681 GET 
http://www.update.microsoft.com/windowsupdate/v6/shared/js/toc.js? - 
NONE/- application/x-javascript
1193446876.869     72 192.168.16.50 TCP_IMS_HIT/304 286 GET 
http://www.update.microsoft.com/windowsupdate/v6/shared/css/hcp.css - 
NONE/- text/css
1193446876.870     73 192.168.16.50 TCP_IMS_HIT/304 286 GET 
http://www.update.microsoft.com/windowsupdate/v6/shared/css/content.css 
- NONE/- text/css
1193446876.899     52 192.168.16.50 TCP_IMS_HIT/304 286 GET 
http://www.update.microsoft.com/windowsupdate/v6/shared/css/toc.css - 
NONE/- text/css
1193446876.949     57 192.168.16.50 TCP_IMS_HIT/304 302 GET 
http://www.update.microsoft.com/windowsupdate/v6/shared/js/update_webtrends.js 
- NONE/- application/x-javascript
1193446877.469    287 192.168.16.50 TCP_MISS/200 405 HEAD 
http://download.windowsupdate.com/v7/windowsupdate/redir/wuredir.cab? - 
DIRECT/63.150.131.201 application/octet-stream
1193446877.697    717 192.168.16.50 TCP_MISS/200 626 GET 
http://c.microsoft.com/wupixel/wt_pixel.aspx? - DIRECT/207.46.18.254 
image/gif
1193446877.729    727 192.168.16.50 TCP_MISS/200 626 GET 
http://c.microsoft.com/wupixel/wt_pixel.aspx? - DIRECT/207.46.18.254 
image/gif
1193446877.959    474 192.168.16.50 TCP_MISS/200 405 HEAD 
http://www.update.microsoft.com/v7/windowsupdate/selfupdate/wuident.cab? 
- NONE/- application/octet-stream
1193446878.239    272 192.168.16.50 TCP_MISS/200 406 HEAD 
http://download.windowsupdate.com/v7/windowsupdate/a/selfupdate/WSUS3/x64/Other/wsus3setup.cab? 
- NONE/- application/octet-stream
1193446878.425    185 192.168.16.50 TCP_MISS/500 1515 GET 
http://download.windowsupdate.com/v7/windowsupdate/a/selfupdate/WSUS3/x64/Other/wsus3setup.cab? 
- NONE/- text/html
1193446878.699    270 192.168.16.50 TCP_MISS/200 406 HEAD 
http://download.windowsupdate.com/v7/windowsupdate/a/selfupdate/WSUS3/x64/Other/wsus3setup.cab? 
- DIRECT/63.150.131.164 application/octet-stream
1193446878.889    187 192.168.16.50 TCP_MISS/500 1515 GET 
http://download.windowsupdate.com/v7/windowsupdate/a/selfupdate/WSUS3/x64/Other/wsus3setup.cab? 
- NONE/- text/html
1193446879.139    247 192.168.16.50 TCP_MISS/200 406 HEAD 
http://download.windowsupdate.com/v7/windowsupdate/a/selfupdate/WSUS3/x64/Other/wsus3setup.cab? 
- DIRECT/63.150.131.201 application/octet-stream
1193446879.302    160 192.168.16.50 TCP_MISS/500 1515 GET 
http://download.windowsupdate.com/v7/windowsupdate/a/selfupdate/WSUS3/x64/Other/wsus3setup.cab? 
- NONE/- text/html
1193446879.579    271 192.168.16.50 TCP_MISS/200 406 HEAD 
http://download.windowsupdate.com/v7/windowsupdate/a/selfupdate/WSUS3/x64/Other/wsus3setup.cab? 
- DIRECT/63.150.131.164 application/octet-stream
1193446879.772    190 192.168.16.50 TCP_MISS/500 1515 GET 
http://download.windowsupdate.com/v7/windowsupdate/a/selfupdate/WSUS3/x64/Other/wsus3setup.cab? 
- NONE/- text/html
1193446880.290    502 192.168.16.50 TCP_MISS/200 9606 GET 
http://www.update.microsoft.com/windowsupdate/v6/errorinformation.aspx? 
- NONE/- text/html
1193446880.296    468 192.168.16.50 TCP_MISS/000 0 GET 
http://c.microsoft.com/trans_pixel.asp? - DIRECT/207.46.18.254 -
1193446880.539    682 192.168.16.50 TCP_MISS/200 767 GET 
http://c.microsoft.com/trans_pixel.asp? - DIRECT/207.46.18.254 image/gif
1193446880.799    490 192.168.16.50 TCP_MISS/200 2723 GET 
http://www.update.microsoft.com/windowsupdate/v6/shared/js/tgar.js? - 
NONE/- application/x-javascript
1193446881.332    523 192.168.16.50 TCP_MISS/200 19823 GET 
http://www.update.microsoft.com/windowsupdate/v6/shared/js/content.js? - 
NONE/- application/x-javascript
1193446881.402     58 192.168.16.50 TCP_IMS_HIT/304 286 GET 
http://www.update.microsoft.com/windowsupdate/v6/shared/css/content.css 
- NONE/- text/css
1193446881.404     61 192.168.16.50 TCP_IMS_HIT/304 286 GET 
http://www.update.microsoft.com/windowsupdate/v6/shared/css/hcp.css - 
NONE/- text/css
1193446881.489     65 192.168.16.50 TCP_IMS_HIT/304 302 GET 
http://www.update.microsoft.com/windowsupdate/v6/shared/js/update_webtrends.js 
- NONE/- application/x-javascript
1193446882.209    699 192.168.16.50 TCP_MISS/200 626 GET 
http://c.microsoft.com/wupixel/wt_pixel.aspx? - DIRECT/207.46.18.254 
image/gif
1193446882.399    862 192.168.16.50 TCP_MISS/500 3465 GET 
http://stats.update.microsoft.com/v5sitereporting/report.aspx? - 
DIRECT/207.46.20.252 text/html
1193446883.142    609 192.168.16.50 TCP_MISS/200 767 GET 
http://c.microsoft.com/trans_pixel.asp? - DIRECT/207.46.18.254 image/gif
1193446908.499     66 192.168.16.50 TCP_IMS_HIT/304 287 GET 
http://windowsupdate.microsoft.com/ - NONE/- text/html
1193446908.599     68 192.168.16.50 TCP_IMS_HIT/304 302 GET 
http://windowsupdate.microsoft.com/redirect.js - NONE/- 
application/x-javascript
1193446909.289    684 192.168.16.50 TCP_MISS/200 524 POST 
http://windowsupdate.microsoft.com/redirect.asp? - DIRECT/207.46.18.94 
text/html
1193446910.009    696 192.168.16.50 TCP_MISS/200 507 POST 
http://windowsupdate.microsoft.com/redirect.asp? - DIRECT/207.46.18.94 
text/html
1193446910.489    472 192.168.16.50 TCP_MISS/301 612 GET 
http://www.update.microsoft.com/windowsupdate - NONE/- text/html
1193446910.999    506 192.168.16.50 TCP_MISS/302 602 GET 
http://www.update.microsoft.com/windowsupdate/ - NONE/- text/html
1193446911.509    508 192.168.16.50 TCP_MISS/200 2448 GET 
http://www.update.microsoft.com/windowsupdate/v6/default.aspx - NONE/- 
text/html
1193446912.070    522 192.168.16.50 TCP_MISS/200 15798 GET 
http://www.update.microsoft.com/windowsupdate/v6/default.aspx? - NONE/- 
text/html
1193446912.569    485 192.168.16.50 TCP_MISS/200 2723 GET 
http://www.update.microsoft.com/windowsupdate/v6/shared/js/tgar.js? - 
NONE/- application/x-javascript
1193446913.101    514 192.168.16.50 TCP_MISS/200 20024 GET 
http://www.update.microsoft.com/windowsupdate/v6/shared/js/redirect.js? 
- NONE/- application/x-javascript
1193446913.899    778 192.168.16.50 TCP_MISS/200 524 POST 
http://www.update.microsoft.com/windowsupdate/v6/redirect.asp? - 
DIRECT/65.55.200.189 text/html
1193446914.729    804 192.168.16.50 TCP_MISS/200 463 POST 
http://www.update.microsoft.com/windowsupdate/v6/redirect.asp? - 
DIRECT/65.55.200.189 text/html
1193446915.296    564 192.168.16.50 TCP_MISS/200 33154 GET 
http://www.update.microsoft.com/windowsupdate/v6/shared/js/commontop.js? 
- NONE/- application/x-javascript
1193446916.144    837 192.168.16.50 TCP_MISS/200 51183 GET 
http://www.update.microsoft.com/windowsupdate/v6/shared/js/webcomtop.js? 
- NONE/- application/x-javascript
1193446916.619    466 192.168.16.50 TCP_MISS/200 3314 GET 
http://www.update.microsoft.com/windowsupdate/v6/shared/js/spupdateids.js? 
- NONE/- application/x-javascript
1193446918.077   1445 192.168.16.50 TCP_MISS/200 50173 GET 
http://www.update.microsoft.com/windowsupdate/v6/shared/js/resultslist.js? 
- NONE/- application/x-javascript
1193446918.732    624 192.168.16.50 TCP_MISS/200 6235 GET 
http://www.update.microsoft.com/windowsupdate/v6/toc.aspx? - NONE/- 
text/html
1193446918.735    606 192.168.16.50 TCP_MISS/200 5421 GET 
http://www.update.microsoft.com/windowsupdate/v6/footer.aspx? - NONE/- 
text/html
1193446918.769    651 192.168.16.50 TCP_MISS/200 3659 GET 
http://www.update.microsoft.com/windowsupdate/v6/splash.aspx? - NONE/- 
text/html
1193446918.810    702 192.168.16.50 TCP_MISS/200 7134 GET 
http://www.update.microsoft.com/windowsupdate/v6/mstoolbar.aspx? - 
NONE/- text/html
1193446918.929     79 192.168.16.50 TCP_IMS_HIT/304 287 GET 
http://www.update.microsoft.com/library/toolbar/3.0/images/banners/windows_masthead_ltr.gif 
- NONE/- image/gif
1193446919.279    495 192.168.16.50 TCP_MISS/200 2723 GET 
http://www.update.microsoft.com/windowsupdate/v6/shared/js/tgar.js? - 
NONE/- application/x-javascript
1193446919.280    538 192.168.16.50 TCP_MISS/200 2723 GET 
http://www.update.microsoft.com/windowsupdate/v6/shared/js/tgar.js? - 
NONE/- application/x-javascript
1193446919.829    540 192.168.16.50 TCP_MISS/200 10681 GET 
http://www.update.microsoft.com/windowsupdate/v6/shared/js/toc.js? - 
NONE/- application/x-javascript
1193446919.886    597 192.168.16.50 TCP_MISS/200 19823 GET 
http://www.update.microsoft.com/windowsupdate/v6/shared/js/content.js? - 
NONE/- application/x-javascript
1193446919.900     49 192.168.16.50 TCP_IMS_HIT/304 286 GET 
http://www.update.microsoft.com/windowsupdate/v6/shared/css/hcp.css - 
NONE/- text/css
1193446919.902     50 192.168.16.50 TCP_IMS_HIT/304 286 GET 
http://www.update.microsoft.com/windowsupdate/v6/shared/css/toc.css - 
NONE/- text/css
1193446919.929     30 192.168.16.50 TCP_IMS_HIT/304 286 GET 
http://www.update.microsoft.com/windowsupdate/v6/shared/css/content.css 
- NONE/- text/css
1193446919.969     53 192.168.16.50 TCP_IMS_HIT/304 302 GET 
http://www.update.microsoft.com/windowsupdate/v6/shared/js/update_webtrends.js 
- NONE/- application/x-javascript
1193446920.459    266 192.168.16.50 TCP_MISS/200 405 HEAD 
http://download.windowsupdate.com/v7/windowsupdate/redir/wuredir.cab? - 
DIRECT/63.150.131.201 application/octet-stream
1193446920.668    657 192.168.16.50 TCP_MISS/200 626 GET 
http://c.microsoft.com/wupixel/wt_pixel.aspx? - DIRECT/207.46.18.254 
image/gif
1193446920.670    680 192.168.16.50 TCP_MISS/200 626 GET 
http://c.microsoft.com/wupixel/wt_pixel.aspx? - DIRECT/207.46.18.254 
image/gif
1193446920.919    445 192.168.16.50 TCP_MISS/200 405 HEAD 
http://www.update.microsoft.com/v7/windowsupdate/selfupdate/wuident.cab? 
- NONE/- application/octet-stream
1193446921.149    223 192.168.16.50 TCP_MISS/200 406 HEAD 
http://download.windowsupdate.com/v7/windowsupdate/a/selfupdate/WSUS3/x64/Other/wsus3setup.cab? 
- NONE/- application/octet-stream
1193446921.340    189 192.168.16.50 TCP_MISS/500 1515 GET 
http://download.windowsupdate.com/v7/windowsupdate/a/selfupdate/WSUS3/x64/Other/wsus3setup.cab? 
- NONE/- text/html
1193446921.609    265 192.168.16.50 TCP_MISS/200 406 HEAD 
http://download.windowsupdate.com/v7/windowsupdate/a/selfupdate/WSUS3/x64/Other/wsus3setup.cab? 
- DIRECT/63.150.131.164 application/octet-stream
1193446921.791    178 192.168.16.50 TCP_MISS/500 1515 GET 
http://download.windowsupdate.com/v7/windowsupdate/a/selfupdate/WSUS3/x64/Other/wsus3setup.cab? 
- NONE/- text/html
1193446922.039    245 192.168.16.50 TCP_MISS/200 406 HEAD 
http://download.windowsupdate.com/v7/windowsupdate/a/selfupdate/WSUS3/x64/Other/wsus3setup.cab? 
- DIRECT/63.150.131.201 application/octet-stream
1193446922.215    173 192.168.16.50 TCP_MISS/500 1515 GET 
http://download.windowsupdate.com/v7/windowsupdate/a/selfupdate/WSUS3/x64/Other/wsus3setup.cab? 
- NONE/- text/html
1193446922.479    258 192.168.16.50 TCP_MISS/200 406 HEAD 
http://download.windowsupdate.com/v7/windowsupdate/a/selfupdate/WSUS3/x64/Other/wsus3setup.cab? 
- DIRECT/63.150.131.164 application/octet-stream
1193446922.691    209 192.168.16.50 TCP_MISS/500 1515 GET 
http://download.windowsupdate.com/v7/windowsupdate/a/selfupdate/WSUS3/x64/Other/wsus3setup.cab? 
- NONE/- text/html
1193446923.251    547 192.168.16.50 TCP_MISS/200 9606 GET 
http://www.update.microsoft.com/windowsupdate/v6/errorinformation.aspx? 
- NONE/- text/html
1193446923.262    524 192.168.16.50 TCP_MISS/000 0 GET 
http://c.microsoft.com/trans_pixel.asp? - DIRECT/207.46.18.254 -
1193446923.389    620 192.168.16.50 TCP_MISS/200 767 GET 
http://c.microsoft.com/trans_pixel.asp? - DIRECT/207.46.18.254 image/gif
1193446923.769    499 192.168.16.50 TCP_MISS/200 2723 GET 
http://www.update.microsoft.com/windowsupdate/v6/shared/js/tgar.js? - 
NONE/- application/x-javascript
1193446924.324    536 192.168.16.50 TCP_MISS/200 19823 GET 
http://www.update.microsoft.com/windowsupdate/v6/shared/js/content.js? - 
NONE/- application/x-javascript
1193446924.412     75 192.168.16.50 TCP_IMS_HIT/304 286 GET 
http://www.update.microsoft.com/windowsupdate/v6/shared/css/content.css 
- NONE/- text/css
1193446924.413     76 192.168.16.50 TCP_IMS_HIT/304 286 GET 
http://www.update.microsoft.com/windowsupdate/v6/shared/css/hcp.css - 
NONE/- text/css
1193446924.499     65 192.168.16.50 TCP_IMS_HIT/304 302 GET 
http://www.update.microsoft.com/windowsupdate/v6/shared/js/update_webtrends.js 
- NONE/- application/x-javascript
1193446925.249    730 192.168.16.50 TCP_MISS/200 626 GET 
http://c.microsoft.com/wupixel/wt_pixel.aspx? - DIRECT/207.46.18.254 
image/gif
1193446925.379    834 192.168.16.50 TCP_MISS/500 3465 GET 
http://stats.update.microsoft.com/v5sitereporting/report.aspx? - 
DIRECT/207.46.20.252 text/html
1193446926.169    627 192.168.16.50 TCP_MISS/200 767 GET 
http://c.microsoft.com/trans_pixel.asp? - DIRECT/207.46.18.254 image/gif
### end of access.log ###
Is it a bug or mis-configuration?
Thank you,   John Mok
Received on Fri Oct 26 2007 - 19:07:57 MDT
This archive was generated by hypermail pre-2.1.9 : Thu Nov 01 2007 - 13:00:02 MDT