Can you send me your poll.php?
My email is:
flare@cohort.cc
I haven't tried this with the latest VB, I'm running 2.0.0 ... but I can't imagine anything has changed in poll.php between the two versions.
Only other thing I can think of off the top of my head is that you are running it on a windows box compared to my linux box... but I don't think that would affect it either.