The answer depends on the way you conduct the experiment.
If you use water near the boiling point, and use open containers
for the water, hot water will freeze before cold water.
The following links were found by way of a Google search on:
ice cubes freeze faster hot water.
http://www.straightdope.com/classics/a2_098b
http://physics.about.com/library/weekly/aa071500a.htm
http://www.sciencenet.org.uk/database/Physics/Original/p00201d.html