Advertisements I'm aware of this thread but it didn't resolve anything. I believe that the audio problem one of my S3's exhibits isn't related specifically to TiVo's software, but rather to HDD behavior. I can live with the glitch but seek a knowledgable poster's opinion. One of my ReplayTV 5000's has always been affected by a similiar problem. Its problem remained unchanged after its HDD was replaced. Both the ReplayTV and S3 work fine in every other respect. The S3, used with Comcast without CableCARDS, is connected to a flatscreen TV via HDMI. It records and plays back uneventfully. But when left buffering for an extended period, such as overnight, with no recordings scheduled the audio begins to cut out. The apparent cut-outs occur from both tuners and from any and all channels. If enough time passes the audio completely disappears. The audio cut-outs are a playback malfunction. Hitting pause ever so briefly and then play brings audio back to normal. Rewinding into a buffer and playing it back brings normal sound at all times. After pausing and playing brings back normal audio, FF'ing to the end of the buffer results in normal audio. Then the cycle will eventually repeat. The difference between the RTV problem and S3's is that with ReplayTV FF'ing to the end of the buffer results in either normal audio or no audio (approx. ⅓ of the time) with no progressive degredation. With either the RTV or S3 the successful workaround is to never leave the DVR playing from the end of a buffer but rather delay playback for a fraction of a second. Thanks in advance for any explanation of what may be happening.