Hi Derrick, Now why didn't I think off that? It works! Too simple to be true... Bill >>the latest security fix kernel from RedHat is 2.6.7 >> and the file in_systm.h is no longer in >> /lib/modules/`uname -r`/build/include/linux/ >> so the build process dies in a heap. >> >> Can anyone suggest a workaround? > >Sure. Remove the inclusion of that header.