All aircraft still have and use halon,there are still a number of government site's/buildings that have halon mainly in computer rooms and in large underground secure rooms like bank vaults. These are being removed and replaced with new safer systems but it all take's time,Halon is still the only safe way in which to put a fire out in a aircraft they have tryed over the years CO2 and DCP(dry chems) but each had their own problems and made life hard for those who have to deal with these fire's at 10,000feet.....There is NO ONE in SA that can refill halon it all has to be sent to Victoria to the halon storage bank for refilling and i can tell you its not cheap.