Just picked up a new Aluminium MacBook - everything seemed perfect, but then noticed that when closing the lid, there is very little 'pull' from the magnetic latch, unlike the white MacBook, which closes with a nice sharp thwomp. Opening the new MacBook lid requires hardly any pressure. I thought this seemed a bit odd, and on further inspection, closing the machine, picking it up and holding it vertically (latch at the top), the lid basically pops open a centimeter or so... Not enough to wake from sleep, but most definitely open. Just wanted to make sure that's it's just me before traipsing the 90mins back to the store for a replacement. Anybody else notice this behavior?