I know it's not nice to reply to ones own post.. but wtfc..

I read an interesting NewsForge article that clears up a lot of the legalese..
A large part of the GPLv3 is aimed at clarifying parts of the GPLv2 that have caused confusion over the past 15 years. Like many of us, the GPL has put on weight with age -- the new license is more than 4,500 words, whereas the GPLv2 is a less than 3,000. Much of the heft comes not from additional provisions to the license, but from additional text meant to define terms used in the license. For example, the GPLv3 defines source code, object code, and even "complete corresponding source code" in relation to a licensed work.