comments show only on reload/refresh

I must pay back the forums for all the help people have given me =)

Anyhoo I’m experiencing a kink in my comment form – users can submit and have their comments recorded, but after the comment gets submitted, it wont show up right away. i (or the users) have to reload the page in order to get the recently posted comment to show.

Is this a typical problem that can be solved? Or is it a general flaw about forms?

Check out the form to see what I mean. Just excuse the self-spamming and the half-baked CSS.

P.S. I am using no plugins regarding comments.