Valdation error - Does not submit, continuously adds new errors ontop of old ones

Valdation error - Does not submit, continuously adds new errors ontop of old ones

Hi guys --
I'm a bit stumped on this one. I have implemented the jQuery validation (i've used it on several other forms fine) on a page that previously contained no javascript. When the form submits, the errors appear as they should, but they do not go away. Instead, when the form is submitted again, another batch of errors are posted above the previous ones. Here's a video of it: http://screenr.com/3kK

Any idea what may cause this?