Just wanted to follow-up on my prior post. My Vitality (though it's no longer really a "Vitality" since it has a custom ROM driving it) still intermittently reboots. Since my prior post I've flashed the phone with a new ROM or two and it still reboots intermittently. With its current ROM it's no longer running out of space, so I've tossed my theory that the rebooting is being caused due to the device being low on space.
This seems to be a common issue with these phones, this rebooting. Doesn't it?