Why is Fedora not a Free GNU/Linux distributions?

[Rahul Sundaram]

Anders Karlsson wrote:
> 
> Just so that I understand this right.
> 
> Any license which will permit being replaced by the GPL, when the
> software it covers is combined with software under the GPL - is
> compatible with the GPL?

Anyone except the copyright holder cannot replace the terms of the 
license. If I developed software and licensed it using any of the 
licenses compatible with the GPL, that original software stays under the 
license I released forever. Software Freedom Law Center published a 
paper describing the effect of combining BSD and GPL license if you are 
interested in the details

http://www.softwarefreedom.org/resources/2007/gpl-non-gpl-collaboration.html

Note that the specific details maybe dependent on the copyright laws of 
your region too.

Rahul