Lately with my 4-tuner OTA Roamio when playing back recorded shows, at irregular intervals the audio will jump ahead by about 5 seconds, play about half a second from the future, and then jump back to where it belongs. I've validated that the glitch is in the recording itself; if I back up and play it again, it always occurs in exactly the same spot(s). It happens both in the main program and during commercials. This is a fairly new behavior that I just started seeing a week or so ago. I haven't yet determined whether the glitching is there while watching live TV or if it is present only in the recording. I suspect it's the latter, since it can happen anywhere at any random time. Any ideas what might be causing this behavior? Anyone else seeing this now or before?