I do not know if there is any gnome-rule concerning other-than-right- clicks in menues ... I never noticed such possiblity in any program, even though it sounds like a good idea.
Imo this is clearly a "wishlist"-bug. Someone with a gnome-account should put it here: http://live.gnome.org/Tomboy/PlaceForNewIdeas -- middle-click for more actions https://launchpad.net/bugs/94726 -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
