I have been through the mill with my 3 mid-2013 macbrick air 13" haswells over the wi-fi dropping issue. Apple has known about this for months and continues to sell them as if nothing is wrong. I have worked through all levels of support, got 3 replacements, did all the approved patches,upgrades,reconfigs, to no avail. At the official Apple support forum there are over 140,000 page views on the thread for this issue. No one is getting any satisfaction. Its time to get their attention. I am ready to start a class action suit I might even go further and try a criminal fraud action because hey know of this issue, can`t fix it and are continuing to sell it. Its fraud, because you cannot use it for its intended purpose, and their support is not effective. Anyone similarly affected who is getting the runaround should post here. We need to get the word out. I am tired of fighting with this and want Apples ass on a platter.