The userlinux project has been approached by the Linux Mark Institute
with a demand for money in order to make use of the "Linux" trademark.
Said demand would also apply to the Debian project. I believe their
terms to be non-DFSG-compliant. See http://www.linuxmark.org/ . Debian
has made historicial use of the mark GNU/Linux and has a right to
continue to do so.
Thanks
Bruce