Hi all. Lately, for lengthy periods of time, my Intel iMac (see sig)'s hard drive has been making whatever sounds hard drives make (you know, the usual kind) for no apparent reason. It will go for a while and then stop. I thought maybe it was because of Parallels, but I uninstalled that and the problem persists. I even reinstalled OS X but the problem has returned. I have Activity Monitor open and sorted the list by CPU and the only things using any CPU at all are things like pmTool, kernel_task, mds, launchd; that's about it besides actual apps I'm using, like Firefox and Adium, but quitting those never solves the problem. I don't think it noticeably slows down the computer, since Activity Monitor isn't showing anything using much CPU at all (sorting the list by RAM usage doesn't help either; the most RAM being used is by kernel_task, 100 megs or so of real RAM), but it kind of worries me, and it probably heats up my computer more than I'd like. Any ideas about what this could be or how I could find out?