Honestly, it's probably Photobucket's fault. Not all web designers test their code in every web browser so sometimes you'll get a site that doesn't work in one browser, but works great in another. Some sites also only work in one particular browser For example, my old workplace's site and VPN only worked in IE, every other browser would fail to establish a connection or load a blank page. That wasn't a fault on Firefox's side, that was a fault of the people who programmed the site.