Well, after spending the last two months talking up my Macbook, I've run into my first hardware failure. This sucks. The title says it all. When I close my lid, my Macbook won't sleep. It sleeps in all other instances (Power button, idle time, Apple menu). It just won't sleep when I close the lid. I've gone through all of the trouble shooting, reset the SMC. Hell, I even did a reinstall of OSX, from scratch. Nothing worked. In the end I discovered that after I close the lid, if I push down on the left hand side of the lid, it will go to sleep. It looks to me like there's a loose connection, something isn't making contact. Looks like I'll be making a call to Apple support. Luckily, I'm still in the first 90 days of owning the computer. Hopefully Apple won't give me the run-around.