Thanks again for your great help. Man, this forum is fast.

I'm pretty certain it's not just the hard drive clicking (that possibility occurred to me, too). And the click that happens at startup can only be heard in the headphones.

I use in-ear headphones that are pretty isolating (like ear plugs). I can't hear the Karma's hard drive through my 'phones.

I'll look forward to the next firmware update.

Thanks again,
Neal