OK kelly. Both 'Wake' options were ticked. I've unticked them. 'Restart after power failure' was also ticked, but that I'm leaving. We're a bit prone to power failures in these backwoods
But here I am 48 hrs after the last 'You must restart your computer' alert, and still going strong.
In a couple of days I shall revert to putting the computer to sleep after a few hours inactivity and see if the old problem returns.
