This works and sounds crazy.
I just read that if you clean the camera lens really good with a soft cloth you will get the green focus.
I'll give anything a try so I did it. My camera now focus's all the time. Green focus on all my shots.
Supposedly there is a little bit of oily film over the lens and when wiped clean it fixes the issue.
give it a shot and report here. I can tell you it worked lol...
4 shots, all green....
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MOD EDIT: Here is the official word from Google was to why the Auto Focus started working correctly today:
Droid camera fix - what we know now