i picked up a macbook (white old style) today, and i am loving it, the only issue that i have, and it may seem a little silly, but when i mouse over the dock i see that the icons have their names over them, but the docks stays in place i could have sworn that one the unit i looked at when you went over the dock it "undulated" up and down in an arch type motion, is that feature some thing i have to turn on?, thanks for the help with this silly question 