I am having an issue where CubeDuel thinks that I only have 2 connections, and keeps bringing them back. Not sure why this is happening, or if you've seen this before.
That can happen if we can't find good overlap between your work history and the work history of your LinkedIn connections. We make reasonable attempts to normalize the resumes, but we can't account for variations, or even plain ol' typos. Double check your work histories and see if you can line them up better.
Still, wouldn't it be better to not do repeat votes? Easy enough to do a query to see if a duel's already been done between 2 folks, though I wonder if that would cause too much of a load increase on your database for you then?