My 1TB HDR-FOX T2 box has started freezing at random points: going into media menu, selecting channel from EPG, keying in channel number. It won't even respond to the front panel buttons. Have to power it off and on again to get it back working. Seems to work fine inbetween. Have tried factory reset but it has made no difference. Has anyone else seen this behaviour? Anything else to try before contacting Humax support? Many thanks in advance.