For the new Yosemite OS, when I log out, and log back in, it comes to the familiar transparent log in screen. However, when I turn my Macbook Pro, instead of going to the black boot up screen like everyone else's and then going into the transparent log in screen. It boots up into a white log in screen, then it goes into a white screen with the apple logo and the loading bar beneath. After finished loading, it goes into the desktop. Is this actually normal? All help is appreciated!