In the Königsjodler there are many accidents and rescues every year, and it's not to be underestimated. The most dangerous is the inclined cable, since most don't use ropes and prusiks for descending/belaying during the descent, nor do they have appropriate (thick) leather gloves for braking with them. Most fractures and injuries are in the wall where the FlyingFox cable ends. Also, some don't always respect self-belay rules - they solo, and also go with too little experience for this difficulty.
The last two fatal accidents are only a couple of days old (1 August 2010). Within a few hours' interval, a 50-year-old German detective fell 100m down, and a 47-year-old Czech doctor fell over 50m deep, almost at the same spot.
With emergency exits it's usually like this, if you don't have two 60m ropes, slings, hammer and pegs with you, you're screwed. Of course, you must know at least basic alpine maneuvers etc. The one who can't go on in the ferrata is usually not physically able to descend independently, besides cramps he's also psyched out. Such a one needs to be brought down from the wall by one of the rescue methods.
As long as nothing happens, OK superficially you don't need to know anything and have no additional equipment with you. But is it really like that?
The line between pleasure and accident in difficult ferratas is right next to us. Unfortunately, some realize it when it's already too late. Gaining experience gradually, good psychophysical preparation, good trip preparation, suitable weather, enough equipment and experience for possible rescue, and a reliable partner even in ferratas play a key role.
The Königsjodler ferrata was built in 2001 and has only C/D rating, which might mislead. However, its length, exposure and technical difficulty even today, in the era of harder ferratas than this, represents a serious challenge even for an experienced mountaineer.