Dead reckoning may not be the best idea in this case; you should do entity interpolation (effectively rendering the other players in the past, which always gives you real, valid positions). I've written about this with much more detail here. Whether or not seeing players slightly in the past is acceptable or not depends on the details of what you're trying to do.

How to synchronize actions like jump in multiplayer?
I understand that the Bible has been translated into more languages than any other book in the world.  What is the current total of languages into which the Bible, or part of the Bible, has been translated.  I would also be interested to know if there are any predictions about how long it will be before the Bible is translated into every language.
