I have a first gen, 2.3 GHZ 15'' Retina Mbp, and lately I've noticed the graphics switching is causing the laptop to just completely freeze for 3-4 seconds. It's not terribly inconvenient, but it's just odd a machine this powerful would be freezing for any time at all. I do have gfxCardStatus installed and running, with dynamic switching always being selected. Maybe the problem is just coming from gfxCardStatus, or maybe it's the laptop itself. Anyone have a similar experience with their first gen Retinas?