OK...have had it on its back, legs mount directly into plastic outer casing, are secure at both ends and fixing nuts tight. Drum spins ok when empty, but it's when anything inside that the thing starts leaping around.
Breakdancing Drum!? :o
We have a Hotpoint Aquarius 1200 (WM 64) - today, it began making a terrific banging sound on spin and tried to breakdance across the kitchen floor!
Taking the lid off showed one of the suspension springs broken, but nothing else apparent. Running the machine showed...