I've had a few less than easy journey's through here - tend to go hand baggage only now as even the Club Europe desk has queues with customers who have issues (15 minute wait is not uncommon). I was astonished when I heard a radio advert boasting pax could turn up 20-minutes before their flight left. No chance in my experience - esp if you have checked luggage.
I once forgot I had a bottle of water in my bag and only realised when I got it through after security screening! Lax or what?!