I've had vista running for about 6 weeks now, and I've noticed that more often than not, the hard drive activity light is almost permanently on with activity... I've checked that it's not running a defrag, and apart from that I haven't got a clue what it's doing, and it's driving me nuts not knowing what it's doing!
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This is possibly not to do with Vista, but to do with hardware, skip to my latest post if you are new to reading this thread: http://forums.hexus.net/showthread.p...46#post1243246