Hi Folks: I´ve read lots of people having issues with the sleeping mode on the Macbook airs, and the following happened to me; Two days ago I plugged an HDMI cable to my MBA 2013 and then I notice flickering when coming back from sleep it was super annoying I turned off the MBA and then it was working correctly without the flickering BUT... the weird thing now is whenever I open the lid the previous app that I was using before i closed the lid shows up, so if I used safari and then iTunes and close the lid and then when I open it again it will show me safari and not the last program, which was iTunes. of course this is not the best performance when you want that your shinny toy works correctly. So any guesses as to what might have occurred? or help on how can I fix it? by the way is some one else still having flickering issues with the screen after plugging an HDMI? thanks in advance people!