This first caught my eye in this application: http://f1results.socialminds.com.br/ in which I (perhaps mistakenly) am using the HTML5 Progress element in the markup. Safari 4.0 still recognizes the progress element, but Webkit nightly (r56207) and Chrome v5.0.3 do not display any CSS styling.
FWIW, console says: "<progress> is not allowed inside <body>. Content ignored."
I have added support for the progress element for Safari in https://bugs.webkit.org/show_bug.cgi?id=36224.
It would be great if someone could review that patch. Once the patch is accepted, you should see a progress bar in your web page.
Created attachment 51420 [details]
Snapshot of the website with the "real" progress element.
Can you please test this with a nightly build after r59645 ? I think it should be fixed now.