I am having a issue with getting the iCal/WebDav Calendar stuff working in evolution. I can hit the url on a web browser and get the calendar.ics file. When I tell evolution to hit the same path it does not work at all. Then when I try the auth stuff or pass a username it still does not work. I have seen the other posts but I can't reproduce the results.. The results being getting it to work.
Do you get an error? Any hints on to what is actually wrong? Do you see the request in the tomcat access log on the server?