I have a 40GB hard drive, running Windows XP Professional. I have about 30.9 GB free. However, after leaving the computer on for a while, the free hard disk space will gradually decrease. Once, when I left it on for 3 days, the free space was down to 8.5GB. Any ideas on why this decrease occurs? I have turned off the virtual memory, but it still does this either way.
It should be duly noted that this computer is running IIS and hosting a web page and FTP server. The FTP server does have anonymous upload blocked though, i'm not stupid enough to leave that on.