This is completely experimental ! This is there so that people can play with it. Things will break ! This is totally expected. Dependencies are very much incomplete, There are issues in kde proper (like duh, what do you expect, this is a beta), and some issues related to OpenBSD. For now, the most annoying issue is that cmake does not handle our shared libraries correctly *at all*. So, the library dependencies between stuff within kde are broken so far. Also, this kde4 will leave you with quite a few processes lying around when you've played with it.