Go to http://www.dellideastorm.com/ and look at the favicon. Is it an "N" or a weird loopy thing? The HTML specifies http://i.dell.com/images/global/brand/icons/favicon.ico and there is an icon on http://www.dellideastorm.com/favicon.ico Sometimes WebKit reads one, sometimes it reads the other. If you continuously reload, you may see one or the other (or maybe none). You can see a screenshot of the weirdness at http://sam.weinig.googlepages.com/deli.png
See Bug 21026.