I suppose the big question for all you early adopters is: How is it running for you? I installed Lion an hour or so ago and so far there's no problems. Everything is seeming to run fine and stable and I'm not seeing any bugs as such. My only gripe is that OpenGL is STILL not fully 3.1, and at this point it really is a joke. It should have come in Snow Leopard. As someone who frequently runs 3D apps on OS X, it is really knocking my confidence. Other than that, everything seems fine and the new features are pretty handy I find.