Hi Hermann, great to hear about Anny, and good that you guys are heading back to the Berg soon.
If you are talking security, I have not head anything for a long time (hikers have been robbed on the Injasuthi escarpment before though, according to what I've heard). So, while its not likely that anything will happen, its good to always be on your guard, stick together and don't leave your stuff unattended (unless its very well hidden). I always take pepper spray along, so you may want to consider that. September is not a month in which you will encounter a lot of shepherds, so that will help, though individuals are still around, and you could encounter smugglers (they'll be using Judge Pass mostly).
Feel free to keep this thread running for more discussion on your trip.