This is a new hiccup for me. My venerable, but otherwise bulletproof HR20 did this when I turned it on Wednesday morning. Menus etc. were fine, the banner and progress bar displayed as normal, showing the active channel and, well, progress... but no picture or sound. When I switched to any SD channels it was fine, and also with OTA local channels, but not on HD sat channels. Similarly with recordings, with the one difference that video would display for HD sat recordings and immediately freeze, while audio would play normally. A menu restart/reset seemed to solve the issue... until it returned at lunchtime today. Now, this is of course, an older piece of kit... and being bulletproof doesn't last forever! it also has a 2TB WD Green drive in an esata Thermaltake dock... and said WD Green has lasted longer than anyone could reasonably ask, but does this sound more like an issue with the HR20 finally getting flakey or the drive? Right now, it's in the middle of another menu restart... let's see if it fixes it again, and for how long! Of course, with a 73% full 2TB drive, a reboot of any kind takes nearly 30 minutes.