721 Software updates re: hard drive spinning down

[SteveinDanville]

Wasn't L1.15 or 1.16 supposed to let the hard drive spin down when it wasn't doing anything? My third 721, which I've had for almost a year now, was as quiet as a church-mouse, but I've noticed that it's gotten noisier and noisier, with the sound being the hard drive spinning 24/7. It's working fine, but the noise is getting obtrusive again (my first 721 sounded like a lathe in a machine shop, and this one's almost there!). Knowing that my first one died of HD failure, should I get ready for the big crash? I have 65 hours worth of movies recorded that I'd hate to lose, but we all know how that goes.......