Whenever I start my machine up, my computer says that I have about 5.4 gigs of free space and gradually over time, I lose space to nothing at about 10mbs every 10 seconds or so. And when I restart my machine, all the space is back. I've recently converted my files from FAT32 to NTFS and then I noticed the problem. The only programs that are loaded during bootup that I notice are Norton AntiVirus and AOL instant Messenger. If anyone can think of any possible reasons as to why this is happening, I would be glad to check it out and see if it fixes the problem. I'm running Windows XP with service pack 1.