My Series 2 has been freezing up on occasion lately while watching live tv which I have attributed to a hard drive going bad. However my TiVoHD has started having issues lately as well. Last night it got stuck several times while watching a buffered recording. I was eventually able to get past the stick by hitting the TiVo button and waiting several minutes for it to respond. Eventually the recording just stopped buffering up for no apparent reason. I rebooted the box and the same sticking button occurs on the playback. So, my question is - Could these freezes/stutters be caused by a bad cable signal? Any other ideas besides faulty drives? Thanks!