I just installed dev. preview 2 of ML, and have a few questions... 1) Can I update straight to dev preview 4 from dev preview 2? I'm running software update, but in an hour it hasn't found any system updates. 2) Possibly this is a bug, but when I enable the scroll to open gesture for the dock, which was a trick that worked on Lion, when I have several windows open and I scroll up over a closed app, I get Snow leopard's exposé! Look!