Oh I'm sure all you
Windows users are QUITE familiar with this little ditty..
you're just sitting here, happily reading your email or something when your computer Spontaneously Reboots. *beep* goes the system speaker and you are left staring at a memory test. You curse, you scream, but you can't really fathom what made that damn thing restart. You take a quick glance at your microwave, but it remembered the time -- couldn't have been a brown-out or anything. Nope, it was just another Spontaneous Reboot.
Almost as inexplicable as spontaneous combustion, I think.