- The touchpad requires you to physically click to generate a mouse click event. It's hard to depress the pad with your pointer finger because of the high spring constant, but if you use your thumb, then the wide click area of the edge of the thumb can hit the pad non-simultaneously, and as a result (as the contact area grows) the mouse cursor can jump away from the click target before you have actually depressed the touchpad, meaning you miss the target and/or click on something else instead. This is one of the biggest non-starters for me, it's extremely frustrating. I'm not the only person who has reported this problem.
- External mouse support seems to not be enabled yet -- at least, the mouse I tried didn't even get powered up -- which means I can't work around the touch pad behavior.
- Thhe keyboardd typpes doubble letterss freqquently. Not sure if it's a hardware bounce or a software glitch. It feels like it might be a hardware bounce, which implies this may not be fixable.
- There are no Delete, Home/End or PageUp/PageDown keys. There are alternatives to Delete (Shift+Backspace) and PageUp/PageDown (Alt+Up/Down) but there is no alternative to Home/End. This makes editing text a pain because you have to frequently reach for the touch pad or use Ctrl+Left/Right to move a word at a time to the beginning or end of what you're editing.
- The keyboard isn't super-nice to type on. I can't put my finger on why exactly.
- Scrolling complex pages can be just slow enough that it bugs me, and opening lots of tabs at once (e.g. when the session is restored each time you log in) can slow down the machine. Even when not restoring a session, there were times when a tab would lock up for 30 seconds, generating a dialog stating "The following tabs are not responding; kill them?".
- It's really quite heavy (though construction quality is very solid).
On the positive side, battery life is awesomely long, and, other than the speed issues on complex pages and/or when restoring many tabs at once (which is the tradeoff for long battery life, I guess), the Web experience is very smooth and fluid when interacting with most individual pages. The browser came with not just Flash but also the Google Talk voice/video plugin installed, which was a nice addition.
Overall, my experience using the ChromeBook for an entire day while sitting in a conference was just frustrating enough that I have decided not to keep it.