Well, I'm glad to see I'm not totally alone. I don't know if I have a hardware problem or have done something wrong to my tablet, but it tends to reboot itself at least once in 24hrs (generally when it's idle). Sometimes I see a couple of days' uptime, but it's an exception. Reflashing and OS upgrades didn't change that ; if anything, it got worse with OS2006 (it's a 770). A Linux system shouldn't behave this way.