busybox

"The Software Freedom Law Center (SFLC) today announced that it has filed the first ever U.S. copyright infringement lawsuit based on a violation of the GNU General Public License (GPL) on behalf of its clients, two principal developers of BusyBox, against Monsoon Multimedia, Inc. BusyBox is a lightweight set of standard Unix utilities commonly used in embedded systems and is open source software licensed under GPL version 2." -- Read more

Time to test GPL in court.