I just upgraded from a Sony BDP-S370 because it made a distracting humming sound during playback. Now I have a Panasonic DMP-BD75, and rather than a humming sound it just has a fan sound, quite noticeable from 7 feet away but certainly less irritating than the Sony's hum. My question is, do you find Blu-ray player fan noise a problem, or is it just something you're to expect with this technology?