I am using Chrome, and I recently purchased the Pro Version of Ccleaner. I purchased it because I felt guilty of using the free version for many years. Now I am being bombarded with popups telling me my system has been cleaned. Surely systems don't need to be cleaned every five minutes, and when it is why do we need to be told, just do it and stop the annoying popup. If it doesn't stop I'll be switching back to the free version. Which is all I really need, I am a very old man (Ninety next birthday) and I only use my laptop to keep my mind active.