I did the usual searching and came up blank. I see audio and video glitches once every two to three minutes when recording two mpeg2 HD streams at once. The glitch starts with video breakup, audio drop out, and about one to two seconds of the program is missing. I am running the latest NR software. I have a FAP-750 hooked up via esata, but I don't think that is the issue. I know it is not a signal issue because I have an HR10 in the same room recording the same programs and they are clean. The signal is via an OTA antenna, and my signal strength readings are typically in the high 90s. I suspect that this is a system resource (memory/disk buffers, OS inability to keep up) issue, but I don't know of any way to confirm that with the HR20. I expect most people are happy with the mpeg4 streams and record those, so they never see this issue. Has anyone else seen this issue? Or is anyone else regularly recording two mpeg2 HD streams and not seeing this issue? It could be that I got a lemon, but I doubt it. I am open to suggestions. Thanks in advance.