No one has posted that if you are unhappy with managed speed you can revert to selected!I have seen the managed target be above flap limiting speed,so you Select a speed below,extend landing flap and then revert to managed.A lot of the problems I have seen are due to the aircraft actually being a couple of tonnes heavier than the loadsheet which reduces the vapp/vls to less than 5kts.As an aside the Lufthansa 320 accident in Warsaw? had the wrong wind entered in the fmgc.