Tudom, hogy elég sok dolgot kiadtak GPL alatt (is). Úgy értettem, hogy az OpenSolaris-szal kapcsolatban erőltette a GPL-inkompatibilitást, ami minden jel szerint igaz is:
In the words of Danese Cooper, who is no longer with Sun, one of the reasons for basing the CDDL on the Mozilla license was that the Mozilla license is GPL-incompatible. Cooper stated, at the 6th annual Debian conference, that the engineers who had written the Solaris kernel requested that the license of OpenSolaris be GPL-incompatible. "Mozilla was selected partially because it is GPL incompatible. That was part of the design when they released OpenSolaris. [...] the engineers who wrote Solaris [...] had some biases about how it should be released, and you have to respect that".
http://en.wikipedia.org/wiki/CDDL#GPL_incompatibility_controversy