Sorry to hear about your bad luck. I'm glad you had a pillow underneath.

We use a Amby Hammock and have no such problems and ours is second hand. My baby currently uses it as his jolly jumper and if that spring is going to break then it would be now.

I'm interested to know where the spring broke. I've inspected ours and there doesn't seem to be any wear and tear. The Amby hammock have a 'saftey chain' so if something like this should happen then the baby won't hit the floor.