Thank you Norel. I'll check some of this stuff. I think it's odd that CCleaner is finding all this data to delete, when the Recycle Bin is empty BEFORE I run it. I don't think it's a problem with CCleaner, but with this old, slow computer, which I have to use at work. My malware detectors aren't finding anything, and I'm running ESET. This only happens after the system freezes up, and I no choice but to restart. Then I run CCleaner, all this data shows up, and then everything is fine for awhile.
Thanks for your thoughts.