Yes it does! And I'm afraid all the time that it will crack at some point and then I won't have a picture any more. Every time it cracks it sends shivers down my spine. I don't know whether this noise is really so healthy for the monitor.

Yes, I also have this problem. It's a real pain because even after it's switched off.
Mine keeps cracking until it's cold again.

So I don't seem to have any, but I think the reason for this could also be the heat, because the monitor gets very hot.

At first yes, now only rarely.