Original Post
This really happend to me, and it took me about two days till i discoverd what went wrong. I have a small corner from my living room with a computer table and chair ( with wheels and it can rotate ). so this day i stand up from my chair to leave the room and my Computer logged out. It didn't just turned off it goes through the normal procedure like i had shut it off. that happend like i said for two days and I was scared at some point that maybe my hardware had a problem. curios it only happens when i stand up and leave the room, but not when I stand up and sit again. I know the answer now, mabye someone want to guess it :-)