@Ident:
Can't hurt. Unless I get a FP, hehe! (All I've had thus far is the occasional FP, fortunately.) But I always investigate before I quarantine or delete.
Nergal, Thank you.
OK, update.
I updated CCleaner on the desktop computer, left the check in the 24 hours box and only in the Temp box, ran Analyze, and yesterday it came up with 1 file, 10k in size. Today I removed the check from the 24 hours box, ran Analyze, it came up with 8,858 files. I put the check back in, and it came up with 143 files. I am puzzled by this.