Does this list of annoyances warrant me demanding an exchange. This computer is about a month old - Will not maintain WiFi when opening the lid after sleep. Any WiFi anywhere, work, home, stores, apple store. If I close the lid and open it, even a few seconds later, the WiFi has to be manually turned off from the menu bar, and turned back on. - Fan and temperature sensor act strange, sometimes locking the fans on and reporting a extremely high temperature when the computer is totally cold. - Computer seems to not sleep or hibernate, regardless of if I have a new user with no software running (to rule out dropbox/istat). - Screen has a slight "inner drop shadow" around the inside edges of the screen about 1-2 millimeters around the edge. Extremely apparent with a light colored object on the screen edges. - Battery life is far below advertised, getting around 3.5 hours of "wireless web." Is my Air a lemon, or is the whole 2011 release of the 11" a series of lemons?