I was getting reboots every week or two before going to 1.00.04. It's been a week since I upgraded and no reboots - but it may be too soon to tell.
Today I saw something weird. I was adding a new user and after I clicked "apply" the front panel said it was rebooting (Self Test...Self Testing...Booting...) but it doesn't actually reboot. Same thing if I change the password on an existing account. Afterwards the lcd is frozen with 'Thecus N5200' displayed. Nothing in the logs and the status is normal/healthy and time uptime hasn't changed. Weird.