Bleh, miss type by me. I meant:
A random thing I found just now is that if you crouch when you're on a ladder, you don't
slide down. Is that new or has it been there for ages?
Sounds like it's been that way for ages and I never found out. My normal method travelling down is by gravity into a 3 deep pool of water at the bottom of a 1x1 drop shaft, and up is by boat moving floating up a waterfall. Only time I normally use ladders is when I'm making the boat-elevator in the first place so I've not had much practice with them to notice I guess.