Macbook Pro Not Auto Sleep
A few days ago, I blogged that the new Macbook Pro i5 and i7 does not do auto sleep very well. It seems that most applications that run in full screen mode breaks the auto sleep for both display and system. More details from here.
It seems that we have figured out a solution to this problem by manually download and install this official update. The question is, why this cannot be found by the system’s autoupdate, but have to be explicitly downloaded and installed.
UPDATE (01 June 2010): This update doesn’t work. More people have encountered the same issue, and currently there is no known solution 
UPDATE (25 June 2010): This problem has been fixed by 10.6.4 update 
