I just got my unibody 17" MBP about 2 weeks ago, and one thing I noticed immediately is that the bottom cover feels really flimsy. There is a noticeable space between the bottom cover and the internal components. It's not really a big issue, but when I pick it up it creaks a bit and feels like a cheap PC. This is my second unibody machine, I also have a MacBook Air but never had this problem - the air back cover is solid. Just wondering if anyone else has this on their machines and if it's normal? It's simply cosmetic but this is the not apple build quality I am used to.