About once every 2 weeks, but by that time the upload speed had dropped considerably. You could tell how long it would be before the next reboot by the amount of HD activity. Just before failing the HD would be going non-stop, I suspect a few memory leaks.... There was talk of buying

a timer plug to cut the power once a day for 15 minutes so it never got too bad. Mind you you had to do all the configuration before you started capturing images as the computer would start to fail to respond to keyboard events once the webcam software had started. Matthew Buckett