Always the oldies eh
Ken: If you look for the part of your profile that looks just like the bit above ("Show on active users") and change the drop down from NO to YES, that is amazingly how you choose whether to show in active users or not. The previous avatar modification is gone and dead, so if you had a photo you want to use, this will need to be changed from "None" to "Kenkay", in the other profile section mysteriously called "Avatar" .
Ian: If you look at your profile you will see that the photo you are changing is called "My picture", whereas the avatar one that is displayed next to your posts is cunningly called "Avatar". It would logically follow that changing your "My Picture" will not change your "Avatar" as they are entirely different things.
Love
Old ITController