XFree86 4.2.1

I tried upgrading to the new version from the XFree86.org pages. I followed their Install procedure and can get kde to work if I log in and do startx. But my SuSE login window at bootup doesn't come up, just the login: prompt. What did I break? I can swap back in my old /usr/X11R6 and old /etc/X11 directories, and the login window comes back at bootup. What's missing? Does anyone at SuSE have a version of this that works properly? Thanks, Rich