G Girl:
On a separate note my new laptop makes a slight whistling noise from the hard drive (I think!). It's intermitent. Not dead loud, but my ears pick up on it.
Go to be honest I'm having trouble imagining what you mean by whistling. It's not unusual to hear hard drives spin up/down, could that be it? Only thing I can think of that might whistle would be a fan or something caught in it.
If you're concerned though then I'd take it back, seeing as it's new and all. If they don't think it's a problem then they're bound to have other laptops doing the same thing to prove it.
G Girl:
Any more tips?
Did you mean the laptop, or iTunes?