Before fraps, I had 150.8 GB of free space. Ever since I had fraps, whenever I delete the videos (plus empying out the recycling bin) and defragment my hard drive, I end up with 1-2 GB less space than when I had fraps but did not use it yet (and each day, when I record and delete the files and so forth, I lose 1-2 GB of free space on my hard drive.) I am trying to get rid of "invisible" files from my hard drive.