volume control and natural scrolling
When natural scrolling is enabled (default for touchpad) volume decreases when you scroll up and increases when you scroll down. IMO, the volume controller should ignore whether it is natural/reverse scrolling- always increase volume when scrolled up and vice versa.
EDIT: I just noticed that this is not just the volume controller. Everywhere (in GTK/Gnome?), brightness controller, some parameter in gimp that can be adjusted using scroll, all of them behaves this way. Scroll up, value goes down. Scroll down, value goes up.
Edited by nkr