Just a friendly tip for any of you guys who like to have the bleeding edge kernel on your knoppix cd's as i do .

If you are trying to upgrade to the 2.6.13 kernel (note I am testing 2.6.13.1 at the moment) and are having trouble with getting the unionfs module to compile then ensure you grab at least the cvs snapshot build 1719 from http://www.fsl.cs.sunysb.edu/project-unionfs.html

I've been waiting days for a little stability between the 2.6.13 kernel and unionfs and so far it is working ok.