I am not certain regarding the article there. If you notice, the first post mixes both FileSaver and DiskLight. In my experience, FileSaver was the worlds biggest pain, slowing the computer, making shut down take forever, and also causing file system issues as well on top of it. I think the posters got confused, intertwining the two. I am not sure how in the world a simple control panel that checks for disk access would corrupt your files. I can say for sure I had disk light running for years with no issues at all. However, I suppose this is all open to interpretation.