This problem of recordings skipping ahead every few seconds has been around since day one. It's been reported by multiple users on this thread. It usually happens on certain channels only. At one point I took a recording that was skipping, and I re-muxed it in VideoReDo. When I played this copy back on the PHD, the video was fixed (continuous) but the sound wasn't. That is, there would be gaps in the sound while the video played. When I played this re-muxed version on my old TVIX device, it played correctly. I figured the TVIX was using a different codec, one that worked better than the PHD's.