I absolutely hate this thing and it has caused me to lose large amounts of work several times. I have the auto update set to go off around 2am, but because I'm a horrible, horrible slacker, that's when I do most of my assignments for Uni. Several times I've done like Gorth says and have been typing away when the pop-up comes around and immediately rebooted thanks to an errant keystroke. More often than not though it will appear just as I look away to write something down on paper and don't notice that it's popped up until it's restarted my computer.