I had some problems to manage to install Calendar Server on Ubuntu 7.10, but I managed to, I hope this will help some peoples : I had made a first mistake, I forgot to install "patch". then I had this error : --------------------- xattr/build/lib.linux-i586-2.5/xattr/__init__.py", line 16, in _func 2008-01-07 09:53:09-0500 [-] [caldav-8008] [-] return func(first, *args) 2008-01-07 09:53:09-0500 [-] [caldav-8008] [-] IOError: [Errno 95] Operation not supported: '/home/fit/CalendarServer/twistedcaldav/test/ data' --------------------- mwacker answerd me this : --- This means the directory where you put your darwin calendar datas '/home/fit/CalendarServer/twistedcaldav/test/ data' doesn't support extended attributes (what i called File System meta-data extension in my previous message). This means you didn't follow steps 2.1 or 2.2 correctly from my howto. Explanation : WebDAV protocol (and also CalDAV which is an extension of it) manage meta-data for URI. Darwin Calendar meta-data management relies on File System meta-data, which are optional settings on Linux. This specials settings are described in section 2.1 and 2.2 of my howto. I think you'd better replay the howto carrefully from the begining before posting here. I know it works because other people claimed it. I'll help you more, if needed, after this (even in french if you want ;-). --- then, I could not connect from an other computer on the same network, to the calendar server. the problem : I had made a bad config file, <!-- List of IP addresses to bind to [empty = all] --> had to be empty, and not set to 127.0.0.1 as it was. now, evrything work great, but I would like to disconnect the verbose option for loggin, is that possible, and what are the different options ? jean