So I bought a MBA 13" 2015 ver last week. The machine runs fine except for a big thing... WIFI acts very erratically. When I'm online after a few minutes the machines drops the connection altogether while still showing full signal on the icon; wireless diagnostics don't seem to sayanything as well when it occurs. At first I thought it was interference, but channel is acceptable and I have internet on my iPhone w no loss of speed and signal if I put it on top of the MBA, so I don't think is the location. I have it hooked up to an external monitor, speakers, usb hub and an ext HD w usb 3.0 Also noticed that clamshell mode makes the internet super slow on it compared to open which again is a disappointment. I'm running 10.10.5, network is on 2.4ghz only.