I suddenly started to get this message when running CCleaner to close Firefox even though I haven't been using Firefox. I see that it has a service started and wonder if this is the cause for CCleaner to report Firefox as running. Whether I'm right or wrong: How can I get rid of this?
Registry are more pain than they are worth and there's "no" real proof that they speed up your PC or help anything. Glary Utilities destroyed McAfee for many users including myself but this a while back and may have been fixed by now. I don't use "any" utility to clean my registry since that happened.