I have Clearcase running on Fedora Core 1. I had to build the vnode module, as directed in the Clearcase docs, but with some modifications to the Makefile for vnode: Change CFLAGS: remove "-Werror", add "-DRedHat9" I have one problem left: licensing is not working. We're using FLEXlm licensing, and I suspect the problem is in our site configuration rather than anything to do with Fedora.