The first purported screenshots of Google’s Chrome OS have leaked, courtesy of a snap-happy Acer parts supplier and a momentarily careless Google demo rep. Apparently taken at the end of a demonstration of Chrome OS for Acer, installing the software in just 10 minutes on a formerly Vista Acer Extensa 4620Z laptop, even this early build of the platform showed its speed credentials: a desktop to desktop reboot in around 25 seconds.