My brand new 540040 has the same "problem". A high-pitched whine, very annoying. If it were in my bedroom, it wouldn't be there long.
I'm thinking about cracking it open to see if it /is/ the fan, and replace it myself, but I'm going to spend some time listening to it first, just to make sure. hate to void the warantee for something that isn't making the noise.
Sounds like the hard-drive is in a constant high-spin. First night it was hooked up, my wife said it sounded like a VCR recording, they "type" of sound.
If other people are noticing it, have they "fixed" it by replacing the fan? Are other stock units not experiencing the noise?
I'd really like to know. I have no qualms about taking it back to CC for an exchange, I haven't sent in the rebate form yet.....
Mok