I just installed 1.6 Looks like theres a few bugs.
The links on comments to members profiles is still broke, you need to add the get_profile&u= to the sting in the public_poll_display.pl template.
most importantly, Members can multiuple vote, and after a vote is made, it goes back to the choice page instead of the graph. If you have hidden results, it does not go back to a page that says you have voted already like in 1.5
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