Using 6.5.1.1 there is a known error in the polloing whereby you can cast a vote every day instead of just once. I was told by tech support that the next version will have a fix but it's something that's annoying me (is there a fix)

I haven't seen a fix, not sure when the official release is coming, but it is promised to come

Does this happen for when you allow only registered users to vote or can unregistered users also vote on your board?

Actually I have both types of permissions in my community and both have the sama result.