So much so that they actually licenced the Joltid technology that they spun out of Kazaa. There was a lawsuit: http://blogs.skype.com/en/2009/11/joltid_settlem

So much so that they actually licenced the Joltid technology that they spun out of Kazaa. There was a lawsuit: http://blogs.skype.com/en/2009/11/joltid_settlement.html http://blogs.skype.com/en/2009/11/joltid_settlement.html There were in fact several lawsuits related to licencing this stuff.