One other small—and hopefully short-lived—problem: the CR-48 is currently useless on most planes. Disable the Wi-Fi and 3G services, cutting off your access to the cloud, and there is no way to edit documents, read PDFs, or do any of the offline work possible in traditional operating systems. Google, however, is promising to restore offline access to its Docs program in early 2011, which should happily resolve that issue.
That said, I've written this entire review on the CR-48, and it's been a fine experience. In a few minutes, though, I'll want to package this story it with photos and send it my editor for publishing. To do that, I'll shut down this device and move to the Mac, where those tasks will be much easier. That might tell you everything you need to know about the need for a cloud-based operating system like Chrome OS.