Jörn Nettingsmeier wrote:
  [snip]
 all this means that if somebody uses GPL'd code without releasing
 under
 GPL him/herself, s/he is in breach of contract with the original
 author(s). it *does* *not* *mean* that you can now assume the entire
 package is up for grabs under the terms of the GPL.
        
 IANAL, but with a certainty of 99,9% this is the actual state of
 affairs
 how German courts does accept/fit the GPL to the German law and it
 seems
 to be the same for the Netherlands,