The html5test.com tells me that my browser does not support the <video> element, and when I try example page, I get the fallback message, usually "Your browser does not support HTML5 video." I know this should work in Safari. I am on Windows 7, 64-bit (running 32-bit Safari). Video works in Safari for everyone else in the office. (Windows 7 setup exactly like mine, Vista, OSX.) I have tries uninstalling, deleting all user preferences, and reinstalling. Anything else I should try?