Another swollen MacBook Pro battery

A reader sent me this picture of his swollen MacBook Pro (17-inch) battery:

As of 10 days ago my MBP started acting up when running on battery power, would randomly shut down when fully charged etc. I called AppleCare on Thursday, requested a replacement after convincing them that I had done enough testing to ensure it was a battery issue.

I received a replacement when I got home tonight and just in time because when I got to work this morning and set the book on my desk I noticed it was wobbly. I lifted it up to find the battery burst. (MacBook Pro 17" CD 2.16GHz)