Yes I think they still exist, they call them generational curses and there are other churches set just to "break" people free of these curses (so they say) but I think most people forget the scripture talks about those who hate G-d.
Name: Nick
Country:
Comments: If you read the D&C you will come to find that we are under one of these very curses.
It began with the Saints having rejected the Law of Consecration when called upon by the Lord to build Zion under Joseph's watch and they failed.
Several prophets including Ezra Taft Benson, has emphasized the fact that we still remain under this curse. And that President Hinkley was the last of the forth generation of prophets since Joseph Smith.
So we should be expecting to see a repeal of this curse some time soon. My bet is the early summer of 2012 on Pentecost.