I could not get chef-server installed on my CentOS server using any of the info from your wiki. After 2 days of trying i finally gave up and had to go to a 3rd party rpm. From there I had chef server installed in about 15 minutes.
http://blog.frameos.org/2011/04/29/installing-chef-server-0-10-in-centos-5-rhel-5/

If some guy on some website can make it that easy why can’t you guys? Doesn’t have to be an rpm. It could be a bootstrap cookbook or a script. I know your project is more oriented towards ubuntu but I much prefer to work with CentOS and so do a lot of other people.

I did manage to get your chef-client bootstrap procedure working but even that was much more difficult than I believe it needs to be.