Hey everyone, Just to start off, I am running the latest version of OS X Mavericks on my machine. Recently, when I leave my MBA's lid closed over night, there would be times where it just shuts off at some point at night. It doesn't happen every time, but it happens enough to become a bit annoying. When I open it up to turn it on, you can feel that it is a bit warm, as if the something was running overnight and I have to hit the power button a few times to get it up and running. I checked the shutdown logs and it says it gets a shutdown reason code 3. I've run a PRAM and SMC reset but it did not seem to fix the issue. Is this a software issue or is something up with my MBA? Thanks in advance.