I've asked someone from the defrag team to answer this...stay tuned!

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"Yinghe Chen" <cremyh_removeit@singnet.com.sg> wrote in message
news:6C5FA3E2-FC46-4285-B252-BCA256B84251@microsoft.com...[color=blue]
>I kicked off the disk defragment in vista, and open the Resource Monitor,
>found at least 5-6 Dfrgntfs.exe is running backgrounds simultaneously, is
>it designed so? Optimized for speed?
>
> I am just hearing that the hard disk is keep on giving out noises.[/color]