Very odd. I updated to 3.3.3 already.
I've removed the plugin, and installed again, but still showing 3.1.1 on the page source.
Maybe there's something in the DB that's making it not show?
Something maybe went wrong in a previous upgrade (the form stopped showing a couple of weeks ago, around the time I last upgraded).
What's the easiest way to flush all the data for contact form 7 out of the db and start fresh?