I've been spending all of today fixing the ceiling plasterboard in my house to stick to the ceiling trusses again. The boards in the living room were bulging down by about 7-8cm... About 300 screws later I've got two (small and unproblematic) rooms left completely undone, and the rest waiting for one more run with spatula and sanding block and, of course, loads of fun painting all over those spots. Bah.

More on this when I'm finished and when I can lift my arms again.