Czuch Chuckers: . . . It happened to me before for unknown reasons?!?!? But after a while and to be specific: a Firefox restart didn't help but 2 restarts helped! Go figure!
You can of course try the following if you use Firefox: Type in the address bar: about:config and then find: image.animation_mode and see if the value is set to normal. If not then set it and restart Firefox.....
DOUBLECRAP! Banana appears non-animated to me too.....