Canon service center did not take my camera for repair. They told me that there is nothing wrong with it. I could not reproduce the problem on the spot. I guess I have to wait until the problem develops more.
I mentioned that I am toying with the idea moving to Nikon, and they answered: “It is always an option”. I guess they do not really care. It is discouraging. You pay two grand for a camera, a few more thousands for all the glass and flashes and then you get blank eyes and boiler-plate answers. You might also move to Nikon for all they care… It sucks!