So for the last couple of weeks, my MacBook Pro (early 2009) would not go to sleep when I closed the screen. It didn't bother me much, but I was still planning on having it checked out by the Apple Store next week. On Wednesday night (the problem was still occurring), I left for a trip to San Diego and I took my laptop with me. I got to the hotel, turned on the computer and noticed that my wallpaper had turned back to the default. I was kind of confused, but I was honestly too tired to look into it. Then I shut my laptop and IT WENT TO SLEEP. I didn't even notice it at first, but then I tried it again. I had been up for 36 hours straight and I seriously thought I was trippin. << That probably best describes how I looked. Any explanations for this oddity, or is my MacBook Pro really just that good?