I burned two DVD's with nero. I am missing a lot of hard disk space. I had about 13 free gigabytes before and now only have 4. I checked for the temp files that were supposedly stored in my documents. They weren't there, so I searched all files then sorted by size. The files still weren't there. So I did scan disk and it found no errors in my file table. Is there any way to fix this problem? I am running XP with NTFS file system.