I tried CCleaner free version 5.41 and it was HORRIBLY SLOW. It just churned and churned before finally cleaning out the junk files. I notified CCleaner and waited for an update that would fix the problem but nothing has changed. So, I went back to version 5.40.6411 and it is FAST as usual. But, now, every time I launch 5.40 I get a popup asking if I would like to upgrade to 5.41. How ANNOYING. Maybe there's something in the settings I can change to stop the popups.