Free/busy with Open-Xchange 0.8.0

I tried to connect to an OX-Server for free/busy informations, but without 
success. I always got error messages from the server. I tested then, how 
Outlook connects to the OX. It uses the following URL:

http://myserver/servlet/webdav.freebusy?username=%NAME%&server=%SERVER%

I replaced then this URL with the KOrganizer default suggestion, inserting the 
user and server values, but no success :-(

But if I open the URL in Konqueror, I can see the I-Calendar data:

http://192.168.1.88/servlet/webdav.freebusy?username=trinity&server=192.168.1.88

Here is an example:
BEGIN:VCALENDAR PRODID:-//www.open-xchange.org// VERSION:2.0 METHOD:PUBLISH 
BEGIN:VFREEBUSY ORGANIZER:trinity@xxxxxxxxxxxx 
FREEBUSY;FBTYPE=BUSY:20050519T140000Z/20050519T143000Z 
FREEBUSY;FBTYPE=BUSY:20050520T143000Z/20050520T150000Z 
FREEBUSY;FBTYPE=BUSY:20050523T140000Z/20050523T150000Z 
FREEBUSY;FBTYPE=BUSY:20050524T074500Z/20050524T114500Z 
FREEBUSY;FBTYPE=BUSY:20050526T120000Z/20050526T130000Z 
FREEBUSY;FBTYPE=BUSY:20050520T090000Z/20050520T121500Z END:VFREEBUSY 
END:VCALENDAR

Any idea, why KOrganizer does not recognize this address? Did I something 
wrong or is it a problem of KOrganizer? 

Please CC to me, as I'm not on the list. Thanks.

-- 
Mit freundlichen Grüßen,
Marcel Hilzinger

Linux New Media AG
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