Event date popup not working on site

This is weird, but in Firefox, when  adding an event in admin panel, the date popup shows fine.

On the site however, the date popup doesn't work..

Running D7.09

There was a bug a while back in some custom templates, I don't remember which ones, but the date  popup was working... it would just pop up way, way off screen.   Not saying this is your problem, but you could check by zooming way out and see if this is happening.