Battery Problem Resolution

I mentioned a couple of days ago my battery problem with my MacBook Pro. The menu bar battery icon, when clicked, said "No batteries available". This story has a happy ending.

I took the machine in to Carbon Computing where it spent 2 nights waiting to be diagnosed. What do computers do when you try to have someone diagnose a problem? They somehow manage to resolve the problem on their own. The problem went away. I hope I've seen the last of it.