Not really sure what happened there. I just logged in under another name that I use for testing things,, and I saw all the options for the poll. Are you sure you didn't already participate in the poll a while back?.. It will only let you do it once... After that, it just shows you the results.
Mitch,,, the only thing I can think of regarding the goofy last post thing,,, is that the forum's software might be re-dating your post every time someone answers the poll questions. I'll test out that theory tomorrow by logging in with my other username, and answering the poll questions... If it changes the date of your last post again,,, we'll know that's what is probably happening.