I am so fed up with noises from Vista. With XP I can leave it and it never really uses the HDD, or at least I can't hear it. But with Vista, within 5 mins of being idle the HDD goes mad as though doing a file search or virus scan. But when I look there is no visible scan going on or anything. When I start to use the PC again the HDD activity stops. Can anyone tell me what it is doing and how I stop it ? I sleep in the same room as my PC and it used to be fine with XP, but with Vista the damn HDD keeps going every so often for no apparent reason. Oh and before you say "turn it off when you go to bed" then I can't as a lot of the time I download off-peak. I know I can buy sound proofing and such like but I am really curious as to what it is doing.