It saves your work at certain intervals. If you turn off your computer after a certain amount of work is done (before the save interval), your computer will have to redo the work.
But please, spam their forums. It doesn't lock up on me after screensaver. I'm using Win XP and the newest version.
But please, spam their forums. It doesn't lock up on me after screensaver. I'm using Win XP and the newest version.