Hi, I have users on DCS were the username is an email address (containing @) on a modified DCS where the calendar-home-set URL is: /calendars/user@domain/ When I try to connect with iCal it askes for calendar-home-set for /principals/users/user@domain/ and correctly gets a DAV:href element with /calendars/user%40domain/ Of course @ doesn't need to be encoded, but from what I can read in the WebDAV RFC, this is legal syntax for a DAV:href element. BUT: After that iCal askes for PROPFIND on /calendars/user%2540domain/ I know I'm on my own when modifying DCS, but my point is that there must be a bug in iCal when it tries to re-encode the already encoded URL delivered by DCS. The bug should hit any iCal user using a CalDAV-server which returns URLs containg @, which makes interoperability difficult. regards, Peter