When I use CCleaner and Window's Disk Cleanup, I always wind-up with ZERO KB/MB of Temporary Files needing to be cleaned-up. However, when I then use Glary's Disk Cleaner, I always come-up with around ±60MB of Temporary Files requiring clean-up! When I press "View Files" to see what they are, I get a short list of files, most of which are files with a .OLD extension, and the total amount of KB of the ones shown comes nowhere NEAR the ±60MB noted on the Disk Cleanup screen. What is going on? I notice that this ±60MB of Temporary Filses seems to get recreated every day, and it appears as if the far smaller files shown in the "View Files" are merely Temporary Files that were added to the original amount that day. Why are these files only detected by Glary, and not CCleaner or Disk Cleanup, and is there any harm in deleting them? In addition, should they be "backed up", or would the total of all the "backups" eventually take-over my hard drive (or are the saved ones deleted upon the following Disk Cleanup)? Thanks, from an only semi-computer-literate user!