I'm amazed no one has mentioned this yet.
[url=http://www.dailytech.com/article.aspx?newsid=1584]Daily Tech[/url] said:I spoke with Apple over the weekend, and to my surprise, some of the issues are well known. Known well enough in fact, that Appe has already started addressing these issues in updated MacBook Pros. According to Apple, it has begun replacing the mainboard inside its MacBook Pros with a new revision. It calls the udpated product "revision D", which is indentifiable by product serial number.
- Serial numbers starting with W8611: revision D
- Serial numbers starting with W8610: revision C