Hi there - I'm using the London template and when the demo home page loads using FireFox, the whole page (logo, menu, showcase image etc) will shift down 1/2 cm, then back up. This happens every-time the page is refreshed, or you move from one menu item to another. (Chromium appears to work OK)

tried to attached a little movie to demonstrate, which used the demo running from your site. But I wasn't allowed to attach an mpeg

Many thanks
Marc