There's a folder titled "lost+found" in my Home folder, and I don't know how it got there, and whether or not it's important. I had Filevault enabled as of yesterday, and I had to repair the .sparseimage before I could disable it. When I repaired it, this folder appeared. I successfully disabled Filevault (YES!!!), and the folder is still there. Inside the folder, there's a lot of cache files, some small insignificant .pngs, and Safari bookmarks. On October 11, Filevault crashed, and I lost all my preferences and Safari bookmarks. In opening all these bookmarks, I found many of the ones that I lost! (Yes!) Is it safe to delete these files?