Computer With 5 Wheels
The story about the Kindle requiring a reboot reminded me of my automobile experience.
I have a 2010 Honda FIT (may be called a JAZZ in your country). I was in a supermarket parking lot with the engine idling. I decided to press the button which changes the display from total distance to trip distance to fuel consumption to how-near-end-of service-interval.
I must have pressed the button for too long a time. The brake pedal no longer worked. The shift handle on the automatic transmission had no effect - it wouldn't go into any gear. The steering wheel had no effect.
I had a computer with five wheels, four on the ground and one for "steering", and it had crashed. I noted an odd round signal lit on the instrument panel. I looked in the user's manual and discovered that symbol indicated that the Electronic Steering System was offended.
GASP!!!
Given that I had a computer, not a car, I turned off the ignition, waited for a short while and turned it back on. The car rebooted and all was well. WHEW!!!
My confidence had been seriously damaged.