Version:            (using KDE KDE 3.5.1)
Installed from:    Fedora RPMs

I have a calendar at 30boxes.com, and 30boxes allows a calendar program to subscribe to a url such as webcal://30boxes.com/iCalUser/userid/myname/someahash/1/, which (from what I guess) writes a .ics file out to /publish/user_somenumber.ics and then redirects the client to that new file. I watched the data going across in ethereal, and no cookies are needed to get the data. I can download the file just fine with wget, but KOrganizer belches this out:

Access denied to webcal://30boxes.com/publish/user_somenumber.ics.

The ethereal dump from KOrganizer accessing it, with my personal details removed:

GET /iCalUser/myid/myname/myhash/1/ HTTP/1.1 
Accept: text/html, image/jpeg, image/png, text/*, image/*, */* 
Accept-Charset: iso-8859-1, utf-8;q=0.5, *;q=0.5 
Accept-Language: en 
Host: 30boxes.com 
Connection: Keep-Alive 
 
HTTP/1.1 302 Found 
Date: Sat, 18 Mar 2006 18:36:28 GMT 
Server: Apache/1.3.34 (Unix) PHP/5.1.2 
X-Powered-By: PHP/5.1.2 
Cache-Control: no-store, no-cache, must-revalidate 
Cache-Control: post-check=0, pre-check=0 
Pragma: no-cache 
Location: /publish/user_somenumber.ics 
Proxy-Connection: Close 
Connection: Close 
Content-Type: text/html 
 

GET /publish/user_36484.ics HTTP/1.1 
Accept: text/html, image/jpeg, image/png, text/*, image/*, */* 
Accept-Charset: iso-8859-1, utf-8;q=0.5, *;q=0.5 
Accept-Language: en 
Host: 30boxes.com 
Connection: Keep-Alive 
 
HTTP/1.1 200 OK 
Date: Sat, 18 Mar 2006 18:36:28 GMT 
Server: Apache/1.3.34 (Unix) PHP/5.1.2 
Last-Modified: Sat, 18 Mar 2006 18:36:28 GMT 
ETag: W/"48802d-667-441c532c" 
Accept-Ranges: bytes 
Content-Length: 1639 
Connection: Keep-Alive 
Keep-Alive: 3 
Content-Type: text/calendar

<The calendar is sent>

This also happens with the site packagemapper.com (Uses google maps to track your FedEx/USPS shipments and also exports a .ics file containing the status of your package), with the same symptoms and whatnot.