I've been having recurring problems with recordings that stall during playback, sometimes for several minutes. While they're stalled, other recordings in progress don't record, both tuners. Most often it occurs during cable programming, but problems have occured with downloaded podcasts. I've tried marking recordings KUID in case it is bad blocks, and the problem recordings have the same problem in the same place for multiple playbacks. Because it's summer rerun season, my sample does not include unprotected digital broadcast recordings, so I can't say if the probelm follows the recording to an alternate TiVo or a computer. I've been intending to run Spinrite 6 on the drive, but its FreeDOS won't boot on my newest PC and on my previous PC it stalls trying to find my local drives. I've ordered a replacement hard drive and will dupe this drive to it. I've also tried triggering a GSOD once already, but I had deleted the problem recordings before attempting it. The TiVo is a Series3, recording Time Warner Cable with Tuning Adapter running, at last check, old firmware. I also have a TiVo HD which has no problems recording the same content, but it does not have a Tuning Adapter(*). I have not yet tried swapping the Tuning Adapter to the TiVo HD. I'd need to swap all the Season Passes between them as well, and that's not a trivial task right now. I've having to not watch anything while a recording is occuring, or watch shows live to monitor them for problems and deal with them immediately, such as ensuring it is recording on the other TiVo. Every channel the Series3 records is a 4-digit (HD) channel. (*) Tuning Adapters are unreliable--I've missed entire days of programming to having two of them becoming non-responsive, not even passing non-switched or analog channels--so I record redundantly between them, recording SD alternates, digital or analog, for those channels only available with the Tuning Adapter. That's a separate problem and a topic for another thread.