Bruno, it's badged because it looks like the traffic stop sign in a lot of countries. Cancel is different anyway - it means abandon what is going on and go back to the way it was before. Stop means just that - halt and stay where you got to.
In other news, why the hell isn't this being included? Daniel, if you're reading this, Frank seems to be ignoring this, and I emailed him about it too. Just include it please! Should I put a poll on Ubuntu forums? I know what the outcome will be! :-) -- No PNG gtk-stop icon (proposed PNG versions attached) https://launchpad.net/bugs/65596 -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs