I have a fresh Lion install, and to configure Apache, I've edited all of the references to DocumentRoot (and the Directory entry for DocumentRoot) to "/Users/jonathan/mirror" (with or without quotes as the original path was with or without quotes). Pointing my browser to localhost gives a 404:
Not Found The requested URL / was not found on this server. Apache/2.2.20 (Unix) DAV/2 Server at localhost Port 80
How can I up /Users/jonathan/mirror with appropriate permissions?