I have been having a very annoying problem for almost a year now. I never bothered much with it but its getting to the point where I need to figure out whats going on. I have two internal hard drives. Each hard drive has two partitions. The problem is the system partition (where Windows XP is on). After a week of having the computer on (or longer) the space on the partition is getting smaller and smaller. Although I didnt install anything or stored any data. Sometimes when I clear the Firefox cache it helps to clean the space up a bit but never completely. Same thing with rebooting. That sometimes gets rid of some of that "ominous space" but sometimes it doesnt at all. So I always end up dragging some non-system files from the system partition on to another partition to clear up the space. But Im running out of storage room! The system partition would have 1GB free space again but after a few days it will show only 300MB or so. When it gets under 200MB it gets critical. Where does this occupied space come from? I have gone through all the folders on the system drive, including temp and hidden ones. And I just cant figure out where this huge amount of "ominous files" is located. By this time there should be 5 GB or so worth of "ominous data". What could this be? I was thinking maybe the virtual memory file (pagefile.sys?). But when I check its size its nothing like "5GB" or anything. And if it was just the virtual memory, shouldnt I get all my "5GB" back once the computer restarts? Also, I have the virtual memory spread out among all four partitions (between 200-1000MB) so I dont get it. Any help is appreciated! Thanks.