It does seem to be very, very random. I think that some of the boards may be faulty. Since I have had it happen two times in a row a couple of days ago, it has not happened again. Definitely had the opportunity to do it as I turn off the comp every night. The ROG light was not blinking either, but it booted just fine.

Btw, the disappearing memory issue, has anybody had that happen? I noticed that at certain settings for Uncore/QPI and DRAM speed memory channels will drop off so instead of 6GB I will sometimes boot with 4GB, and sometimes with just 2GB. I read on the R2E forums on Asus that some people RMAed the board because of this...maybe that's what I ought to do?