I've got a request for anyone who has their poll functioning:
Go to your control panel and see how many users you have allowed to post a poll. IF and only IF there is just 1 user in that field, I want you to try and add a random 2nd user. Then check if your poll is still functioning.
If there is anyone who has more than 1 user allowed to post a poll and still has the poll functioning, I want you to know I'm bloody jealous...