We have a lot of shows stored on our PVR & extender. Recently more & more of the shows play fine for awhile, then stop. Sometimes they jerk forward in small chuncks (30 seconds of the show maybe?) a couple of time & then play but often it just dies. Can't fast fwd or rewind. If we stop it, the show is reset back to the beginning. Sometime (if we try enough times?) we are able to FFWD from the beginning & actually get it to go a minute or 2 past the troublesome area & continue watching it. VERY frustrating!! I really would hate to lose some of what we have recorded!