Here's one that is a total mystery to me: The last couple of days I have been working on a file made with MS Word. It was a letter that I have been working of for a couple of days. I edited and changed the file several times and put it in two different folders. I wasn't sure which folder one of them was so I did a search with an app I've had for years called My Power Desk and it does a great job of searching. So in the search box I typed the name of the files. I couldn't count the number of places that it found the file but I'm sure there were hundreds of them. And in the path of many was "temporary internet files". So I than ran CCleaner. After it finished cleaning, there were only 6 instances of the file. This is a total mystery to me. First why so many in Temporary Internet files and why so darn many of them in so many places.