I have not had my cactus for long so I am not really sure how worrying this is, but it does look unpleasant and I am sure it can't be a good thing. The leaves on my Madagascar Palm keep turning black, they don't feel dry they just seem to turn black from the ends of the leaves.
I thought at first that I was over watering it, but a week later without more water and the same thing is still happening. I had to pull off another 3 leaves this morning.
Does anybody have any suggestions on how to fix this, does it just need more time without water?