I wrote this article last night and published it just after midnight.
My MacBook woke up this morning from sleep and promptly had a kernel panic (the OS X equivalent of the Blue Screen Of Death, except it’s gray and translucent). A few minutes into the next session, it rebooted itself for no apparent reason. And it’s on external power, so it’s not a battery issue this time.
It’s going back to Apple again. After a month of waiting, they gave me another faulty motherboard.
I feel sorry for the tech who takes my call in a few hours.