This could be my own config problem, anyways, when compiling the kdebase-1.1.2-30mdk.src.rpm, the morph3d screensaver fails to build because it is unable to find the headers to Mesa which are installed in /usr/X11R6/include and not /usr/include. My immediate fix, for building purposes, was to symlink the GL include directories, but this should probably be added to the spec. Other GL screensavers are likely to have that problem. On the topic of screensavers, xscreensaver-3.18-3mdk.src.rpm had difficulties configuring until libGL.so.1.2.0 was symlinked to libGL.so (and too with the libGLU.so.3.1.2 library). It found the GL headers, but failed to pick up the library. Correct me if I am wrong, but should not ldconfig create the symlinks? John P.S. I hope nobody minds the compile bug reports. I'm building the source distributions for the K6 and so I'm finding these as I go through that process.