(MOVED TO BUGS DISCUSSION)
I downloaded and have run Ccleaner 5.23.5808 but am not seeing the level of cleaning that I did with previous versions. Either that, or Google, and perhaps others, have some new insidious method of tracking.
With earlier versions, I could either sign out of my gmail account, or not, and then after running Ccleaner, when I pointed by Firefox browser to: gmail.com, I would get Google mail's default sign-in page. At that point I could sign in to one or the other of my gmail accounts. Now, however, after running Ccleaner, and signing in to gmail, I am presented with my personalized email home page. In other words, even clearing History, Cookies and all Internet cache, evidently I'm still transmitting identifying information to Google. This does not seem right, based on previous experience. Any ideas, anyone?