Hi everyone, I am new here and going to buy a MBA Ver. B SSD verion in my local apple store. I know there are cheaper place to buy online but considering what people are discussing here about the grey line and the flickering screen, I would like to check the MBA myself in the store to make sure they are "known issues free". Could everyone give me specific checking procedures about the grey line as so far I haven't found any pcitures or description on how to check this out. For the screen flickering, I found a link: http://www.keithstravels.com/travelog/photos/desktopsplit-loginscreen.jpg in the forum. Is there a better / more obvious checking method for this one? For other known issues like the four finger swip, I will ask the store clerk to demostrate for me to check. Is there anything else I need to check before taking the machine home? such as the battery or other issues? To be honest, I know the grey line and screen flickering issues don't bother many people, but since I am going to pay big for this machine, I certainly want to make sure I have a "perfect" or at least "known to be perfect" machine. Everybody's help here is appreciated!!!