I've just installed the latest Firefox (10.0.2) on both of my computers. It's gone smoothly on my laptop, which runs Windows 7, but on my desktop, which is Windows XP, the menu bar and programme bar at the top are still visible, as opposed to being reduced to the orange 'Firefox' dropdown tab that should be in the top left of the screen. I've tried uninstalling/reinstalling, to no avail- is it that XP just doesn't support this part of the browser?

Thanks in advance for your help!