So I first noticed this the other night and didn't think anything of it (figured it was just some random beep from a gadget). It wasn't until the 2nd or third time that I realized it is coming from the body of my macbook pro (and I use external speakers above my desk, so I know it wasn't just a sound from the built-in speakers). No idea where it is coming from because the beep is very random. I thought maybe the beeping was being triggered by the hard drive initializing because it beeped once when I left it alone for a while and then tried to use finder, but I haven't been able to replicate it at all. It's hard to describe the beep... it isn't very high pitched, but it seems like a "something isn't right" beep. My questions are: 1) Does this sound like anything any of you have heard of? 2) Is there any HDD checking software I can use. On a windows maching, when I want to check the status of a harddrive, I use UBCD's HDD testing stuff. Would that work on a mac?