So I just updated my MBA to 10.7.3 yesterday. Now today when I do my normal routine of plugging my sleeping Air into my external display and usb keyboard/mouse it no longer works correctly. The Air wakes up, but it turns on the internal screen even though the lid is closed, so my external becomes the secondary display. Even if I open the lid and close it again it does nothing, the internal display still keeps primary even though it is off. Also, it seems that it has issues auto-detecting displays. If I unplug my external display with the lid open it doesn't blank the screen to adjust resolution, and my mouse can still go onto the nonexistent display. The only way to fix it is by going into display settings and hitting Detect Displays. So basically, no matter what I do my Air thinks the internal display should be on. Is anyone else having these issues? I searched and found a thread on it, but it was for 10.7.2, which was working for me.