Funny, I slept much longer than I expected (or would've wanted) to last night as well - about 9 to 9,5 hours. Granted, that's less than 12, but it's still more than the 7 or 8 I usually get (and need/want) these days; and I got up immediately when I noticed the time, too, whereas usually, the figure of 7 or 8 hours includes some turning around and getting back to sleep for another bit before I finally get up.