Interesting issue.
I didn't realize yet it had an alarm for the clock.

After Installing the VPN client, and the FMTuner Applet, I noticed the N800 rebooted itself approximately every hour. (Could have been random)
I removed the FMTuner applet from, the desktop and it seemed to reboot less frequently. after a couple of days of rebooting every once in a while, I uninstalled the FMTuner, and the VPNClient. The VPN client did not fully uninstall, probably because I selected a nondefault location for the start up icon.
Anyway I am now seeing reboots approx once a day. I verified there are no scheduled alarms. (At least it doesn't show any.)

Does anyone know where I can turn on or check a system log for application errors? I have root access and XTerm with DropBear ssh.