FireFox holding 100 - 300 Mb of temp files.
CCleaner hanging at 39% for unprecedented time then it goes on. But within a few hours I'm clearing out 100 plus.
It may be I need to leave it in since FF and W10 seem to have a working 'agreement', but the performance had all but gone prior to cleaning.
Perhaps a limit on what FF is allowed to store away?
What I don't understand is how some folk never need to do this cleaning while others lose the use of their computers to the extent that it's not possible to even download CCleaner. Not old kit, but say, 4 gig of memory. One, I had to boot with Linux clone to save the files.