Artifex Software, the company behind the open source Ghostscript PDF processing software, has filed a lawsuit against voting machine vendor Diebold and its subsidiary Premier Election Solutions. Artifex says that Diebold violated the GPL by incorporating Ghostscript into commercial electronic voting machine systems.
The conclusion of this article says it best:
If Artifex's allegations prove correct, then it will further demonstrate the broad scope of Diebold's technical incompetence and irresponsible business practices.
Diebold faces GPL infringement lawsuit over voting machines