My MBA has wi-fi profiles for two wireless connections. One is an AirPort Extreme Base Station (currently the latest generation) at home, and the second is a Mi-Fi-like device (set to 802.11g only mode if it makes a difference) I carry around when I'm out. When I'm home, the Air connects automatically right out of sleep, but with the Mi-Fi, I have to manually select it -- no auto-connection.
Could the g-mode be the cause of that? This isn't a dealbreaker, mostly an annoyance, but it's surprising nonetheless.
Could the g-mode be the cause of that? This isn't a dealbreaker, mostly an annoyance, but it's surprising nonetheless.