Assuming the current wifi issues will be solved soon, what's the deal with this new wifi stuff on the Air? I pretend to know some things about computers, but I'm not getting this. For example, in some parts of my house the wifi signal is very weak on my 2008 Macbook (I don't know what is causing the problem, but a few years ago the signal wouldn't be as bad as it is now - aging laptop or aging router?) - is the new Air designed to make the best out of my router, IE getting a stronger signal at a greater distance from the router? Or is it only better if I have a better router?