.
>
> I can't tell for sure but last time I analyzed the situation (especially in
> connection with XP service pack 2) it turned out that many updates are
> broken. Windows Update pulls a download through the proxy but then tries a
> direct connection to the internet without talking to the proxy.
>^^^^^^^^
>.....
http://www.squid-cache.org/Doc/FAQ/FAQ-11.html#ss11.54
M.
