I got to the point of not using LH unless no other carrier available after at Kiev they charged me over 1000 euros to take an extra checked in bag when in business class.
The final straw for me was on a trip from OSL to FCO via MUC when they left my check in luggage in OSL after cancelling a flight without even bothering to inform customers at check in even though the flight had been cancelled earlier - it was left to the lounge staff to inform me.
I didn't find out about the left behind luggage until I was sat in 2A at MUC. When there are irregularities like the flight I had when I had to be rebooked on to a later flight from MUC, I always check that my baggage is actually going to make it.
I checked at the lounge desk and handed them my baggage tags, and they told me that yes my bags were in MUC. When I got to the gate, I checked again this time to check that the bags were at the plane (I had been at MUC for 4 hours at this point) and i was told that they were on the way to the plane. I walked to my seat feeling puzzled as the flight was on final call. So I spoke to the flight attendant and asked her to check. She came back apologetically saying that the bags were still in Oslo. In spite of waiting at OSL for 4 hours they never got loaded on to the first flight. I was furious because I had been lied to twice.
The flight attendant asked me to fill in a customer complaint form, (this was early December 2010) and lo and behold have I ever heard anything back? Nope. Not a sausage. Zilch. The bags took 4 days to get to me, despite me giving correct information about where I was staying.
The result of this is that any travel to Germany, Austria or Switzerland I will not use any part of the LH group. If there is no flying alternative, then I will get the train. I have already done this for internal German journeys and have taken the wonderful Zurich to Vienna transalpine train journey 3 times. Losing a bag is one thing. Lying repeatedly to a business class or any other passenger is unacceptable, and I now see to it that LH gets none of my business in the future