Well, here we go again -- another set of unverified, likely-fake Google Chrome OS screenshots has just landed in our inbox. Our tipster claims that while most apps are online, Picasa runs locally for photo and movie viewing, and the "System" tab displays the contents of SD cards and digital cameras. Do we believe it? Well, no -- all of this is just too easily mocked up -- but it's certainly interesting stuff, and there's something about that super-nasty blue scroll bar that we find oddly intriguing, even though it's mysteriously missing some pixels at the top. We'll leave it up to you to decide if this is real -- hit the gallery and let us know wha