It often happens that after I put my 2012 MBA (8 GB RAM, 10.7.4) to sleep by shutting the case, when I open it up again either all open windows have been banished to the edges ("Show desktop"), or I'm in Mission Control. And for a frustrating few seconds, my 4-finger swipe doesn't do anything to bring everything back. Does this happen to anyone else? While I'm at it, I might also say I'm disappointed in the track pad on this computer. It often "makes mistakes", like it stops scrolling even though I'm still moving two fingers, or it detects a phantom 3rd finger and goes to the page top or the end of the page, though I haven't got a 3rd finger anywhere near the pad. I wouldn't complain except my 2009 17" MBP running 10.5.8 is *perfect* in doing just what I expect it to with my gestures, so I know it's possible for a trackpad to interpret flawlessly. How about you guys? Maybe I have a slightly off-kilter machine?