Do you have rpm kernel-devel installed? /usr/src/kernels/2.6.18-1.2849.fc6-i686/include/linux/config.h, on my machine, is a link to/usr/src/kernels/2.6.18-1.2849.fc6-i686/include/linux/autoconf.h, which is owned by kernel-devel. I assume that, somewhere in the install of the kernel-devel, that link is created. Kevin