BTW, the latch works fine, and no white smudges (at least I can't see any). My only complaint is the battery life (it seems to last only about 2 1/2 hours, and this is with AirPort and Bluetooth OFF, and MAX BATTERY LIFE); it's disappointing, quite frankly. The unit gets a bit hot as well; but similar to the Ti PBs - no complaints here.
But, I have to admit, I liked being able to take the keyboard off on the Ti PBs without taking apart the whole notebook, as is the case with the AL PBs. The stock 80 GB HD (4200 RPM) was actually VERY nice: a lot quieter than I expected.
Overall, the AL PB seems stiffer than the Ti PBs.
My two cents...