Haven't seen it yet, but then on .90 it showed up after a week and then did it twice in the same day. But hey, it did it 4 out of 5 times with the .8 series OS and even gave me the "not inserted" freeze a couple times when I was trying to avoid the "inserted" freeze...lol!
Anyway, I've done probably 15 resets (only one was unplanned) with .99 so far and have not had any hangs on boot.