I have 60GB hard drive, NTFS, win xp pro. After installing all my software (about a year ago when i bought the computer) it left me with about 30GB spare and i've hardly used any extra memory since. Recently it suddenly reported I had low memory and it showed i only had about 300KB left(from 30GB!). I hadn't installed anything either. I therefore did a disk clean up, defrag, system check, reboot, uninstalled large applications and brought back about 15GB yet every day it displays different memory sizes? Yesterday it was 18GB, today it's 7GB and all without me installing or downloading anything. Can anyone tell me why it is constantly reporting different memory sizes on my hard drive?