Looks like this is a bug, but it worked for me my development environment (so that’s the strange part). But you can fix this as follows:
Open /wp-content/plugins/contact-form-7/scripts.js
and add -form on lines 3 and 12, so it looks like this:
jQuery(‘div.wpcf7-form > form’).ajaxForm({
…
jQuery(‘div.wpcf7-form > form’).each(function(i, n) {
That should do the trick. I’ll contact the author, so he can fix it in the next build.
Grz,
Jarown