As of last night, on one of our Hoppers we're having a problem where every recording is a 4-hour "No Information Available" block, but each corresponds to one of our timers, and when they fire they break up into the proper recordings of the proper length. For instance, last night one 4 hour block resulted in the correct-length Hugo (plus another 4 hour block incorrectly labeled with the last show in the block, True Grit).
Red button reset and full "pull the plug, wait" reset did nothing. Check Switch comes back ok. The other Hopper isn't having this problem.