After purchasing my first new 2.4 alu MacBook I took it home and the battery cover was very loose and had a broken weld on a hings. Returned it to the Apple Store for another, got it home and the battery cover was VERY loose. Returned it for another, this one isnt as bad but the cover is still loose and rattles when I type or set the MacBook on a hard surface (and yes I have tried bending the tabs) but the clicking is at the other end the side with the release latch, the cover is rattling on the metal underneath. After much wasted time and frustration I email the tried and true Steve Jobs email address, I got a call a from a person from Apple Executive offices, he said Steve wanted him to give me a call But they said they have heard nothing of the loose and/or rattleing covers and he wants me to email him the 3 serials and they want me to send in my MacBook so they can investigate and they will send me a new one. The intent of my email was to bring the issue to Apple and hopefully get this resolved for all of us.