my air has the intermittent core shut down where one core drops out every couple seconds or even completely shuts off when the fans kick up and the usual. i took it to the apple store where they though i said "computer shutdown" and ran tests... obviously they found nothing since that wasn't my problem. so they call me and i tell them it was a core shutting down, they said they'll do tests again since they know what the real problem is. come today, they said the did stress tests and it was fine, which i know it's not (even a genius said he saw the core dropping when they did first tests). any advice on what to do? they'll also have had my computer for 7 days tomorrow as well... apparently not fixing anything. another small note... my screen is a bit loose and they won't do anything about it as well. sorry for the long rant, but i don't know what to do at this point and have a reservation tomorrow. thanks for the help!