The differing folder structures depend on the way they were created. For patriciawindt it's a direct copy of the original xRhino-server. My server (as well as yours?) was created through gendistro .sh-script which I got from the ps2linux archive from japanese sourceforge, thanks to deba5er for the hint.
Oh i din't know that, before i asked you if you weree the admin of that website you said no but you dint say you were in touch with the owner.
Anyways, is folder structure is different of yours! Although it's very similar to mine.