I can reproduce this problem as well  by going to the following link.  IE6 + 
Squid2.5-Stable7 Transparent + Dansguardian on Fedora Core 3.  No problem 
with Firefox though.
http://www.hotmail.msn.com/cgi-bin/dasp/notsupported.asp?_lang=EN&account=wrongPDDomain
>From: "Elsen Marc" <elsen@imec.be>
>To: "Mun Fai" <munfai@viewqwest.com>, <squid-users@squid-cache.org>
>Subject: RE: [squid-users] Hotmail problem
>Date: Wed, 22 Dec 2004 14:14:37 +0100
>
>
>
> >
> >
> > Hi,
> >
> > Is anyone having problems accessing hotmail?
> >
>...
>
>  Yes, many people seem to have this problem; which happened
>quite recently.
>Check the archives for the past 2 days.
>
>The cause of this issue is unclear. Some theories include
>that Windowsupdate , mangled IE functionality due or not
>due to a a hickup which , for instance entered DLLs 'too'.
>
>'Let Unix live for ever'
>   'Let Windowsupdate from now on , be called WindowsToTrashCan'
>      (Heil *3)
>
>M.
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Received on Wed Dec 22 2004 - 06:29:08 MST
This archive was generated by hypermail pre-2.1.9 : Sat Jan 01 2005 - 12:00:02 MST