gtkunique: gtkunique (GTK Single Instance Library)
gtkunique: 
gtkunique: GtkUnique allows the creation of single instance application, that is
gtkunique: applications that can only have a single instance running at any given
gtkunique: time.  Once launched an instance, each new instance of the application
gtkunique: should simply exit() or (optionally) send a message to the running
gtkunique: instance and then exit() depending on the response value returned by
gtkunique: the running instance.
gtkunique: 
gtkunique: http://live.gnome.org/SingleInstanceApps
gtkunique: