As others have pointed out, this thread is about a "blinking" problem. Even AppleCare became confused about this, so I put up a page for them that very clearly shows the fault:
http://jtrotman.tripod.com/mbpro.htmlIt is a hardware problem, as demonstrated earlier in this thread:
http://discussions.apple.com/message.jspa?messageID=11034320#11034320I got my MBP back from it's fourth repair last week, with yet another new logic board. (Apple would not carry out four costly hardware repairs if they could fix it with software.) It worked well for two days, then started blinking again on the third day, almost as soon as I woke it up from sleep. It got really bad, blinking at least every minute, so it was easy to video again:
http://www.youtube.com/watch?v=OlQUOUURbiM(There's a slew of videos like this on Youtube - the problem is widespread.)
I called Apple again and they offered a replacement, which is still being sorted out, looks like it is going to take a week. My new contact at Apple is someone in Executive Relations, because while I was waiting for the latest repair I wrote a formal letter of complaint and sent it to a few PR-related Apple email addresses - they soon called me to apologize and asked me to contact them directly if I had any more issues.
Every time it's sent back to me, the technician calls me to say it's fixed and has passed all their tests. To me, this proves that Apple do not have a test for this issue. They could devise one, but they have not, so do not for one minute accept your machine back if Apple say their tests find no fault.
My advice to people still suffering with this issue is to get some proof: video the problem, and keep complaining, on the phone or in an email: keep it short (200 words), state the facts.
Apple and their shareholders are the people who should be worrying about this issue, not us, the customers.