Ok so I'm trying to fix a friend's computer. I've got a fair bit of experience but this one baffles. She's an old lady all she does is photos, internet and email. All of the sudden the hard drive began filling up, she's literally down to something like 800 megs of her 80 gb hard drive, but there is only truly something like 20 gigs on the hard drive. It was down to 15 free, then 7, then 1, etc. like over the course of a day or two the space was just actively "filling" up. The cpu and ram are at normal idle rates the hard drive is going NUTS!!! What could this be? Thanks in advance. It's windows XP fyi.