Overnight it seems that some of my system preferences were reset, nothing else. The ones I noticed the most were: Internet passwords deleted, had to type them in again. Time set to 9:45 AM some day on 2001. My screen saver was reset to random. There may have been others but those are the ones that were most apparent. Could anyone help maybe? My OS version is OS X Version 10.6.8 Snow Leopard.