Whilst watching a recording the Humax put out a warning on screen that the box had been 'inacive for more than 3 hours' - it hadn't been inactive at all during that time - and I noticed the indicator light on the front was red, though I was able to continue viewing normally. Switching to a Freesat broadcast made no difference - light red, viewing as normal, switching to standby and back on again made no difference. Only after twice disconnecting/reconnecting the power did the blue light reappear and appears now to work normally - could this be normal behavioour or indicative of a fault?