Wow is my first reaction. My second is WOW again! I don't think I have ever ran across that but having said that, my guess is a virus can be the cause. You did not mention what type of files are taking up your disk space? Also, are you able to remove them? I would check the "Services" file under Administrative Tools very closely and determine any suspicious entries. It took half a day to help fix a friends laptop that was saturated with trojans, spyware, uname it and I found several entries in the Services file. These hackers set the recovery of their programs to 4977 times to restart!!!
I have a 2003 Small Business Server. Just last week I had 37G total, 19G free. A few days ago, I had 403 M free. When I check the disk usage total it shows the builtin/administrators account using 35G, but I can't figure out what processes could be using it. The shadow copy service had been running, and that was using 3G, once I disabled it I got it back, but the next day my storage was used up again. Any ideas?

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