I have only had my macbook a couple days now and it is a great little machine. I am however noticing some possible physical flaws. 1. There is a slight gap between casing and keyboard area on left above the ports. 2. Seems to get pretty hot. (heard this was normal) 3. When macbook is closed the top half (display) seems a little loose and shifts slightly from side to side when pressure is applied at front corners. (noticed while whiping) Are these things normal? Any feedback from new owners would be great.