Hmm, on Firefox 23.0a2 I just see a white box with nothing there. Usually this means an addon is interfering somehow. But I turned off AdBlock, Ghostery, HTTPS

Hmm, on Firefox 23.0a2 I just see a white box with nothing there. Usually this means an addon is interfering somehow. But I turned off AdBlock, Ghostery, HTTPS Everywhere, Flashblock and Greasemonkey, which is basically everything, and reloaded, and still nothing. Anyone else? (Edit: All fixed, thanks Oompa!)