Out of all my watches, I've had two Panerais with screw-thread problems, one of which was not new, so let's count that as 1. My GMT had a second hand fall off and that was repaired at the dealer's expense (Silix), so that's 2. My Navitimer from Ruby died in its first week and was replaced in a drawn-out amusing story, so that's 3. My Precious Time raffle IWC GST died in its first week, and was replaced quickly, so that's 4. My Ultimate PO had bracelet problems dealt with through ingenuity so I don't count that. Oh, and my MBW 1680 arrived sort of DOA, with the second hand moving but the hour and minutes not. That's a definite DOA so that makes 5. Hang on, my pre-forum datejust died after a few months. Does that count? If so, that's 6.
I have over 20 watches, almost 30, so I am glad that my dealers look after me. I don't think that I'm unlucky or that my cash is wasted, though.