These files are not in use since these are files that I've temporarily (manually) placed into the TEMP folder. These files include .TXT, .XLS, .DOC, .EXE., .JPG, etc.
I've noticed that even after 48 hours where I haven't accessed these files (and when I log into my system), the .EXE files are not automatically deleted from my TEMP folder. I think that the same thing happens with my .JPG files. I think that these files aren't automatically deleted after 48 hours either. The .TXT, .XLS, .DOC, as well as some other files are automatically deleted when I log onto my systems using the settings that I specified above (run at startup and automatically delete files in TEMP folder after 48 hours).
The reason I'm not 100% sure whether it just doesn't delete other files (besides .EXE) is because I wind up manually deleting these files myself when I notice that they aren't automatically deleted from my TEMP folder. The only files that I might leave in there a bit longer are the .EXE files to see whether they eventually get deleted automatically but they don't appear to get deleted automatically so I wind up deleting them myself manually.
As I've also mentioned, I've noticed this problem with previous versions of CCleaner but didn't report it until recently since I didn't become a member of this forum until a few days ago.
TWISTEDMETAL also noticed this issue so I'm not the only person. It also happens on 2 of my PCs (one running Windows 2000 and the other running Windows XP Pro) so it is not a PC issue.