I've tested several other images (OpenATV, PurE2) and so far none of them have had any problems with the time. I did install the test version of TNAP 4.1 yesterday, but I didn't leave it running as the blind scan seemed to still be less accurate than other images. I have no idea what's going on, whether it's hardware or software (but if it's hardware, why does it misbehave more with some images than others?) There was, in fact, a period when TNAP wouldn't scan any horizontal transponders, at all, when other images would. After rebooting a few times, it started picking up horizontal transponders, but would still miss transponders that other images found. I just don't get it! I can't completely rule out a hardware problem, but why does every other image seem to perform better no matter what?