Okay, so when I first got the air I connected my old time machine when first booting to restore all my old settings and etc. Left it go, screen went to sleep while it was loading data. After a while I came back, noticed the external drive was no longer transferring and hit a key to wake the display. The LCD backlight came on, but it was a black screen with a flashing white bar at bottom. Unable to do anything I did a hard power down, rebooted and the machine went into Lion with no problems. My desktop and all my data from the prior machine was there without issue. I've been using the machine since with zero problems, but I'm trying to see what (if anything) that blackscreen nonsense was about.