For systems that run PowerNap, I know that it automatically downloads system updates daily while in sleep. However, what if that update is, say, an SMC update? Or how about a software update that requires a restart such as a new OS version (e.g. 10.8.2-> 10.8.3)? Will PowerNap download AND restart the system so when you open up the lid you're now on a new version with the new software? This feature is a tad confusing.